摘要
海洋水声信道的复杂性和多变性会对水声网络中的介质访问控制协议性能造成影响。为更好地适应水声环境,对水声网络中基于竞争窗口的MAC协议进行改进,提出了基于最优窗口的MAC协议以及窗口值的优化策略,利用开源平台NS-3对其进行仿真,分析得出了水声网络节点数量、通信带宽和数据包大小与最优窗口大小之间的关系。仿真结果表明,在最优窗口下水声网络的吞吐量得到了显著提升,这一结论将为今后构建水声网络提供理论基础和数据支撑。
The complexity and variability of oceanic acoustic channel have great influence on the performance of Media Access Control（ MAC） protocol of Underwater Acoustic Network（ UAN）. To be better adapted to underwater circumstance,a strategy of optimal-window has been proposed to improve the performance of MAC protocol based on Contention Window（ CW）. By using the open source network simulation platform NS-3,the relationship between the optimal-window and the number of nodes,communication bandwidth and size of packet is analyzed in an underwater circumstance. The simulation result shows that in optimal-window,the throughput of UAN is evidently improved. The result provides the data support and a solid theoretical basis for building UANs in the future.
出处
《无线电工程》
2016年第2期10-13,30,共5页
Radio Engineering
基金
国家科技支撑资助项目(2014BAK02B04)
