水声通信网络介质访问控制协议的设计与仿真  

Design and Simulation of Underwater Acoustic Communication Network MAC Protocol

作　　者：韩晶[1] 黄建国[1] 钟永信[1] 

机构地区：[1]西北工业大学航海学院,陕西西安710072

出　　处：《电声技术》2010年第3期67-71,共5页Audio Engineering

基　　金：中国博士后科学基金项目(20080441183)

摘　　要：采用OPNET平台对水声通信网络节点模型与介质访问控制协议进行了设计与实现,并重点研究建立了基于忙时间改进网络分配向量帧冲突处理机制的水声通信网络协议——UMACAW。同时建立并测试了包含1个主节点与4个传感器节点的水声通信网络。仿真结果表明,MAC层采用UMACAW协议能更好地克服冲突,减少节点间端对端传输延时,从而获得更高水声通信网络的吞吐量。Acoustic communication network is the main solution for wireless information transmission of underwater applications, such as oceanographic data collection, offshore exploration and tactical surveillance, but its throughput performance is degraded severely by the delay of underwater acoustic channel. In this paper, underwater acoustic communication network node model and MAC（Media Access Control） protocol are designed and implemented using OPNET platform, while modified NAV（Network Allocation Vector） collision avoidance mechanism based on busy duration in UMACAW protocol is studied particularly. An underwater acoustic communication network consisting of 1 master node and 4 sensor nodes is established and tested. Simulation results show that, by using UMACAW protocol in the MAC layer, the network could overcome collisions and decrease end-to--end delays, therefore, larger throughputs are achieved consequently.

关 键 词：水声通信网络 介质访问控制协议 网络分配向量 延时容忍网络 

分 类 号：TN929.3[电子电信—通信与信息系统]