一种基于距离聚类和网络竞争状态的水声通信网MAC协议  

A MAC Protocol for Underwater Acoustic Sensors Network Based on Distance Clustering and Competitive Degree of the Network

作　　者：孙伟凯 王晓梅[1] 张家森 杜海洋 SUN Weikai;WANG Xiaomei;ZHANG Jiasen;DU Haiyang(Information Engineering University,Zhengzhou 450001,China;Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]信息工程大学,河南郑州450001 [2]郑州大学,河南郑州450001

出　　处：《信息工程大学学报》2024年第5期518-523,共6页Journal of Information Engineering University

摘　　要：针对水声通信网中竞争窗口协议无法适应网络竞争状态的问题,提出一种基于距离聚类和网络竞争状态的自适应介质访问控制(MAC)协议,适用于汇聚节点移动的数据收集型水声网络。首先,该协议采用可变的自适应退避机制,根据每个传感节点到汇聚节点的距离不同进行聚类,为每类节点设置不同的竞争窗口值,以提高信道利用率。其次,依据网络竞争状态,设置退避因子用来调整竞争窗口值,提高网络通信的公平性。仿真结果表明,所提协议在吞吐量、时延、公平性等性能上均比传统的基于竞争窗口的MAC(CW-MAC)协议表现优异。To address the issue that the contention window protocol in underwater acoustic sensors net⁃work can not adapt to the network competition state,an adaptive medium access control(MAC)proto⁃col based on distance clustering and competitive degree of the network(DCCDN)is proposed,which is suitable for data-collection-oriented underwater acoustic sensor networks with mobile sink node.Firstly,the protocol employs a variable adaptive back-off mechanism for clustering nodes according to their respective distance from the sink node,assigning different competition window values to each node type to improve channel utilization.Secondly,according to the competitive degree of the network,the back-off factor is set to adjust the competition window value and improve network fairness.The simulation results show that the proposed protocol performs better than the traditional contention win⁃dow MAC protocol in terms of throughput,delay,and fairness.

关 键 词：水声传感网络 退避机制 聚类 竞争状态 NS-3网络模拟器 

分 类 号：TN915.9[电子电信—通信与信息系统]