TPSN-RBS joint time synchronization algorithm for wireless sensor networks

JIANG Fan; ZHENG Lin

doi:10.13873/J.1000-9787(2016)01-0149-04

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TPSN-RBS joint time synchronization algorithm for wireless sensor networks

更新时间：2025-09-11

- TPSN-RBS joint time synchronization algorithm for wireless sensor networks
- Vol. 35, Issue 1, Pages: 149-152+160(2016)
- 作者机构：
  
  1. 无线宽带与信号处理重点实验室
  2. 桂林电子科技大学信息与通信学院
- 作者简介：
- 基金信息：
- DOI：10.13873/J.1000-9787(2016)01-0149-04
  CLC： TN929.5;TP212.9
- Published：2016
- 稿件说明：
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[1]姜帆,郑霖.无线传感器网络TPSN-RBS联合时间同步算法[J].传感器与微系统,2016,35(01):149-152+160.

JIANG Fan, ZHENG Lin. TPSN-RBS joint time synchronization algorithm for wireless sensor networks[J]. 2016, 35(1): 149-152+160.
[1]姜帆,郑霖.无线传感器网络TPSN-RBS联合时间同步算法[J].传感器与微系统,2016,35(01):149-152+160. DOI： 10.13873/J.1000-9787(2016)01-0149-04.

JIANG Fan, ZHENG Lin. TPSN-RBS joint time synchronization algorithm for wireless sensor networks[J]. 2016, 35(1): 149-152+160. DOI： 10.13873/J.1000-9787(2016)01-0149-04.

摘要

针对大规模多跳传感器网络节点间所存在的同步误差及其累积误差问题

提出了一种基于加权最小二乘法的TPSN-RBS联合时间同步算法。该算法充分利用可监听到的消息

通过加权最小二乘法估计得到节点逻辑时钟的时间偏移和频率偏移的最优解。用Cramér-Rao下界对本算法进行性能分析

同时与TPSN算法进行仿真对比

结果表明:该算法提高了节点间的同步精度

且在节点密集的大规模无线传感器网络中

在保证较低通信量的同时降低了累积误差。

Abstract

A TPSN-RBS joint time synchronization algorithm based on weighted least square method is proposed

aiming at synchronization errors and its calculative errors existing between massive multiple hops sensor network nodes. The optimal solution for the time offset and frequency offset of logical clock of node is obtained by weighted least square method

using messages that can be heard. The Cramér-Rao lower bound is used for performance analysis

and compared with the TPSN algorithm

the simulation results show that

the synchronization precision between nodes is improved

and in large-scale wireless sensor networks with dense nodes

assure lower communication traffic

at the sometime cumulative errors are reduced.

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