金瑞,刘作学.基于生存周期的自组网同步研究[J].电子测量技术,2017,40(6):147-151
基于生存周期的自组网同步研究
Research on time synchronization of Ad Hoc networks based on life cycle
  
DOI:
中文关键词:  自组织网络  时间同步  生存周期
英文关键词:Ad Hoc networks  time synchronization  life cycle
基金项目:
作者单位
金瑞 装备学院信息装备系北京101416 
刘作学 装备学院信息装备系北京101416 
AuthorInstitution
Jin Rui Department of Information Equipment & Equipment Academy,Beijing 101416,China 
Liu Zuoxue Department of Information Equipment & Equipment Academy,Beijing 101416,China 
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中文摘要:
      主从式同步作为TDMA方式下自组网同步方式的一种,因其同步精度高、收敛速度快而被广泛研究。为了提高同步的收敛速度和同步精度,解决已有的主从式同步方法中存在的一些问题,文章利用网络节点的生存周期提出一种新的自组网同步方法。首先结合具体时帧设计和时隙接入详细论述了同步方法的实现过程,随后通过OPNET仿真软件对不同接入情况下所有网络节点的收敛时间和同步精度进行了测试。仿真结果表明即使当节点接入冲突数量达到最大时,在不同的入网状态下,所有节点中最长的同步收敛时间也不超过1 s,并且源节点和距离6跳的节点之间的同步误差只有0.37 ms,验证了同步方法的快速收敛性和精确性。
英文摘要:
      Master slave synchronization has been widely studying because of its fast convergence speed and high synchronization precision as a synchronization methods of Ad Hoc networks based on TDMA. In order to improve the convergence speed and synchronization precision of master slave synchronization, solve some problems in exi sting master slave synchronization protocol, this paper proposes a new synchronization method for ad hoc networ ks using the life cycle of network nodes. This paper discuss the implementation of the synchronization method in detail with the time frame design and the time slot access, then the convergence time and synchronization accuracy of the network nodes in different access scenarios are tested by OPNET simulation software. The simulation res ults show that when the number of access conflicting nodes reaches a maximum, the longest synchronization time in different network state does not exceed 1s, and the synchronization error between the source node and the 6 ju mps node is only 0.37 ms.The fast convergence and accuracy of the synchronization method are verified.
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