Research And Implementation Of Acoustic-Radio Cooperative Transmission Network Based On NS3

Under the background of Internet +,the Internet + Ocean innovation cooperation model emerged to promote the implementation of the national smart ocean strategy.The new concept of the acoustic-radio cooperative transmission network can achieve longer-range and higher-speed ocean communication through buoy nodes.With the help of aerial UAV or satellites,an integrated land,sea,air,and sky network can be built.The acoustic-radio cooperative transmission network mainly forms a network system of underwater acoustic sensor networks and wireless sensor networks.The relatively redundant idle link resources of the radio link are used to make up for the shortcomings of the performance of the underwater acoustic link.Real-time transmission improves the accuracy of marine environment prediction.It can be seen that the acoustic-radio cooperative transmission network is of great significance to the development of the Internet + Ocean.But at present,few people are involved in the research on the simulation of the acoustic-radio cooperative transmission network.Therefore,this article aims to develop an acoustic-radio cooperative transmission module based on the NS3 network simulation system,and research related aspects of the acoustic-radio cooperative transmission network.The main work and conclusions of this article are as follows:1.Analyzed the technical principles of the acoustic-radio cooperative transmission network and the structure and routing protocol of the underwater acoustic sensor network,and summarized the advantages of the acoustic-radio cooperative transmission network and the advantages and disadvantages of various networking structures and routing protocols in the underwater acoustic sensor network and applicable scenarios.2.Design and implement the acoustic-radio cooperative network module based on the NS3 network simulation platform to provide platform support for the protocol implementation and debugging simulation of the acoustic-radio cooperative transmission network.3.Introduce the traditional flooding algorithm and transplant it to the acoustic-radio cooperative network module.The flooding algorithm is implemented for four indicators: average end-to-end packet delay,data packet delivery rate,network throughput and network energy overhead.The simulation results show that the acoustic-radio cooperative transmission network is superior to the underwater acoustic sensor network in terms of data packet delivery rate,network throughput,and network energy consumption.However,in the actual application,it is necessary to measure the influence of the cooperation of the buoy nodes and the size of the network on the performance of the acoustic-radio cooperative transmission network,and consider the performance of each performance to make the overall performance of the network optimal.4.A routing mechanism for buoy node priority wireless link forwarding is proposed.When designing the routing mechanism,drawing on the core idea of AODV,introducing the buoy node priority wireless link forwarding mechanism,improving the routing request message and routing table,and increasing the node load and remaining energy as the basis for node forwarding judgment,thus The overall performance is better than the flooded acoustic-radio cooperative transmission network.