Research On Routing Protocol For Shallow Underwater Acoustic Ad Hoc

Ocean is a very important area in human's life, and the research on underwater acoustic (UWA) communication plays an important role in the development of ocean resource, the detection of ocean environment and military applications; and the shallow area of ocean with so frequent human movements becomes the research key point. As the UWA technology develops, Ad hoc applied in UWA shows bigger and bigger advantages: enlarges the function distance of current UWA systems, provides distributed communication, completes quick configuration and needs less human operation. Its self-forming character satisfies the requirement of dynamic UWA systems, and it's able to transmit and receive information in mush wide.The network layer of Ad hoc OSI model is the key point of Ad hoc research, and it completes the data transmission from source node to destination node through the determined routing. As the core of network layer, the routing protocol becomes a very important part in Ad hoc research.This paper firstly introduces the background and significance of the research, the current situation of UWA communication and the characteristics of shallow UWA channel, and compares the UWA channel with normal wireless channel. Secondly, it introduces the current situation and characteristics of wireless mobile Ad hoc technology, the elements of Ad hoc OSI model and theirs functions, and compares Ad hoc with normal mobile communication network. Thirdly, it focus on the network layer of Ad hoc OSI model, based on the understanding of the differences between UWA Ad hoc and normal wireless Ad hoc, and the familiarity with the functions and characteristics of all kinds of Ad hoc routing protocols, chooses the Ad hoc routing protocols suitable for shallow UWA environment: DSR and AODV, and goes through further research of these two protocols and finally picks up DSR as the most suitable routing protocol which support simplex communication. And then introduces the applications, characteristics and modeling of OPNET, a kind of network simulation software, designs the model of shallow UWA Ad hoc, and simulates using DSR protocol. Finally, it gives the prospect of UWA Ad hoc.