| Catchment underwater acoustic communication in wireless sensor networks,sensor technology and network technology in a field of detection in the marineenvironment with excellent prospects for development. However, due to the highwater acoustic channel noise, low propagation velocity, attenuation characteristics,making the study of underwater wireless sensor networks in the process, moredifficult, some of the mature onshore network protocol used in the underwaterenvironment is not immediately used, Research needs to be modified, which is thestudy of underwater wireless sensor networks presents no small challenge, mostresearch is still in its network validation phase. So, how will the underwater wirelesssensor networks and AUV better together, the use of self-organizing sensor networksAUV communicate a certain size, there is a lack of effective techniques.In this paper, some key technology and content-based ad hoc network AUVunderwater wireless sensor networks involved. Proposed a reasonable solution AUVfrom the group network communication system, and the system framework ofhardware platforms, operating systems, protocol stacks and socket interface sectionwere described. Systematic study of the AUV MAC layer protocol, first to the MAClayer basic knowledge and concepts to do a review, and then some MAC layerprotocol is now being studied by a detailed introduction and use Aqua-sim waterunder the agreement on the part of network simulation software to do the simulationanalysis.802.11DCF protocol, the protocol used underwater environment, a very precisemeasurement is not NAV (Network Allocation Vector) values, resulting in more thanthe node generates a delay of channel resources in a competitive process, the networkan impact properties. Process in order to obtain better network performance, based onthe position of the nodes dynamically obtain NAV worth method, making node access channel more in line with the underwater environment. |
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