面向水下移动汇聚节点的媒体接入控制协议研究  

Research of MAC protocol for underwater mobile convergence nodes

作　　者：陈奕霏 高山[1,2] 王桐[1,2] 陈立伟[1,2] 刘松铭 CHEN Yifei;GAO Shan;WANG Tong;CHEN Liwei;LIU Songming(College of Information and Communication Engineering,Harbin Engineering University,Harbin 150001,China;Key Laboratory of Advanced Marine Communication and Information Technology,Ministry of Industry and Information Technology,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001 [2]哈尔滨工程大学先进船舶通信与信息技术工业和信息化部重点实验室,黑龙江哈尔滨150001

出　　处：《应用科技》2024年第4期114-121,共8页Applied Science and Technology

基　　金：先进船舶通信和信息技术工业和信息化部重点实验室项目(AMCIT2101-08).

摘　　要：针对水下移动传感网络(underwater mobile sensor network,UWMSN)中使用自主移动节点进行数据收集存在的拓扑结构不断变化、传输不可靠的问题,提出一种动态退避发送数据帧的自适应媒体接入控制(media access control,MAC)协议,通过将协议划分为控制阶段与数据阶段周期性地更新可建立通信的节点信息,根据当前周期获得的节点距离信息调度各节点数据传输顺序,利用水下环境的大传播时延计算各节点的回退发送数据帧的时间,使用数据重传机制提高传输的可靠性。采用OPNET网络仿真模拟器对提出的协议进行仿真和对比分析。仿真结果显示,协议在密度较低的小范围水下传感网络中可保证较高的投递成功率和较低的端到端时延,增大了网络吞吐量,提高了网络性能。A dynamic backoff adaptive media access control(MAC)protocol for sending data frames is proposed to address the issues of constantly changing topology and unreliable transmission when using autonomous mobile nodes for data collection in underwater mobile sensor networks(UWMSN).The protocol is divided into control phase and data phase to periodically update the node information that can establish communication,and the data transmission order of each node is scheduled based on the node distance information obtained in the current cycle.Using the large propagation delay of the underwater environment to calculate the time for each node to send data frames back,and using a data retransmission mechanism to improve transmission reliability.The proposed protocol was simulated and compared using an OPNET network simulation simulator.The simulation results show that the protocol can ensure a high delivery success rate and low end-to-end delay in low-density small-scale underwater sensor networks,increasing network throughput and improving network performance.

关 键 词：水下移动传感网络 媒体接入控制 自主水下航行器 数据收集 OPNET 握手 动态回退 动态拓扑 

分 类 号：TP393.1[自动化与计算机技术—计算机应用技术]