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应用科学学报 ›› 2013, Vol. 31 ›› Issue (1): 15-20.doi: 10.3969/j.issn.0255-8297.2013.01.003

• 通信工程 • 上一篇    下一篇

基于脉冲耦合的TPSN时间同步协议

摘要：针对传统TPSN协议的不足，提出了一种基于脉冲耦合的时间同步协议，称为P_TPSN协议. 该协议是
一种脉冲耦合的、非交互的分布式无线网络时间同步方法. 首先建立网络层次拓扑结构以确保下一层网络节点能
接收上一层网络节点的时间信息. 层拓扑建立后，上一层网络节点将时间信息在物理层编码为脉冲波后广播出去，
下一层网络节点接收这些时间信息后计算其加权平均来调节本地时钟. 此方法不仅能提高分布式无线网络时间同
步协议的鲁棒性，而且具有良好的可扩展性及快速收敛性. 理论分析和计算机仿真均表明此方法是有效可行的.
关键词：同步；时间同步；分布式无线网络；无线传感器网络   

  1. 1. 西安电子科技大学通信工程学院，西安710071
    2. 桂林电子科技大学信息与通信学院，广西桂林541004
  • 收稿日期:2011-11-15 修回日期:2012-05-04 出版日期:2013-01-31 发布日期:2013-01-31
  • 作者简介:师超，博士生，研究方向：协同通信网络的分布式同步，E-mail: shichao@mail.xidian.edu.cn；仇洪冰，教授，博导，研究方向：宽带移动通信、协同通信网络的分布式同步，E-mail: qiuhb@.quet.edu.cn
  • 基金资助:

    国家自然科学基金(No.61071088)

TPSN Time Synchronization Protocol Based on Pulse Coupling

SHI Chao1, QIU Hong-bing1,2   

  1. 1. School of Telecommunication Engineering, Xidian University, Xi’an 710071, China
    2. School of Information and Communication, Guilin University of Electronic Technology, Guilin 541004, Guangxi Province, China
  • Received:2011-11-15 Revised:2012-05-04 Online:2013-01-31 Published:2013-01-31

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Abstract: In view of the disadvantage of the traditional timing sync protocol for sensor networks (TPSN), a pulse-coupled time synchronization protocol for sensor networks (P_TPSN) is proposed. P_TPSN is a noninteractive time synchronization scheme based on pulse-coupled synchronization for distributed networks. A network topology is built to ensure that the time information of net nodes of previous hierarchy can be received by the net nodes of posterior hierarchy. After receiving these time information, the net nodes of posterior hierarchy will adjust their time clocks respectively by weighted average of the received time information. This scheme can enhance robustness of distributed wireless networks and has good scalability and quick convergence.
Theoretical analysis and simulation results show that the proposed scheme is effective and feasible. 

Key words: synchronization, time synchronization,  distributed wireless network, wireless sensor network

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