[1]王 硕,高明生,徐 宁.能量最佳分簇水下声传感器网络时钟同步研究[J].计算机技术与发展,2017,27(12):144-147.[doi:10.3969/ j. issn.1673-629X.2017.12.031]
　WANG Shuo,GAO Ming-sheng,XU Ning.Study on Clock Synchronization of Underwater Acoustic Sensor Networks Based on Optimal Energy Clustering[J].Computer Technology and Development,2017,27(12):144-147.[doi:10.3969/ j. issn.1673-629X.2017.12.031]
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能量最佳分簇水下声传感器网络时钟同步研究
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
27
期数:
2017年12期
页码:
144-147
栏目:
应用开发研究
出版日期:
2017-12-10

文章信息/Info

Title:
Study on Clock Synchronization of Underwater Acoustic Sensor Networks Based on Optimal Energy Clustering
文章编号:
1673-629X(2017)12-0144-04
作者:
王 硕; 高明生; 徐 宁
河海大学 物联网工程学院,江苏 常州 213002
Author(s):
WANG Shuo; GAO Ming-sheng; XU Ning
School of Internet of Things Engineering,Hohai University,Changzhou 213002,China        
关键词:
水下传感器网络; 分簇技术; 时钟同步; 能量
Keywords:
underwater sensor network; clustering technology; clock synchronization; energy
分类号:
TN929.3;TP393.3
DOI:
10.3969/ j. issn.1673-629X.2017.12.031
文献标志码:
A
摘要:
时钟同步技术不仅是水下传感器网络节点协同工作的基础问题也是必要条件。 与陆地传感器网络不同,电磁波在水下传播受到的衰减严重,而水声信道带宽窄且信号传播速率低,在水下传播具有很大的时延,给水下传感器网络的时钟同步带来了诸多挑战。 文中研究了水下传感器网络的分簇技术,在此基础上提出传感器网络的时间同步算法。 该算法将时间同步分为簇间节点同步和簇内同步两个过程,通过求数学期望的方法计算求得最佳的簇数值,当网络分簇的个数为最佳簇数时,全网络的能耗达到最低并延长了网络的生命周期。 MATLAB 仿真结果表明,与 MU-Sync 时间同步算法相比,基于能量最佳分簇的水下声传感器网络时间同步算法能耗低且精度高,显示出最佳分簇时钟同步算法的优点。
Abstract:
Clock synchronization technology is the fundamental problem and also a necessary condition for underwater sensor networks’nodes to collaboratively work. Unlike terrestrial sensor networks,acoustic channel bandwidth is very narrow,resulting in low signal transmission rate,and the propagation delay is very large in water. The clustering technology for underwater sensor networks is proposed and synchronization protocol is put forward for underwater acoustic sensor networks on the basis. It divides the time synchronization into inter -cluster and intra-cluster synchronization. The optimal number of clusters are calculated by the method of mathematical expectation. The
WSN energy consumption will be the lowest when clustered by the optimal number of clusters,and it improves the lifetime of WSN. The simulation on MATLAB shows that compared with another clock synchronization protocol,MU-Sync,the optimal cluster clock synchro nization technology not only degrades energy consumption,but also behaves high precision,validating its advantages.

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　FENG De-hai,LIU Guang-zhong. M-TDMA:Efficient MAC Protocol for Underwater Sensor Network Based on TDMA Protocol[J].Computer Technology and Development,2015,25(12):23.
[2]张梦娜,刘广钟. SE-MAC：一种节能的水下传感器网络MAC协议[J].计算机技术与发展,2015,25(03):67.
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[3]陈 浩,刘广钟.NC-CSMA:应用在水声传感器网络的无冲突协议[J].计算机技术与发展,2018,28(01):78.[doi:10.3969/ j. issn.1673-629X.2018.01.017]
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更新日期/Last Update: 2018-03-07