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Vol. 151, No. 4, April 2013, pp. 95-100

 

Bullet

 

A New Time Synchronization Algorithm for Wireless Sensor Networks Based on Internet of Things
 
1 Zhang Yong-Heng, 1,2 Zhang Feng

1 School of Information Engineering, Yulin University, 719000, Yulin, China

2 School of automation, Northwestern Polytechnical University, Xi’an 710072, China

1 Tel.: +8613509121314, +8613891915616

1 E-mail: 709863637@qq.com, tfnew21@sina.com

 

Received: 4 April 2013   /Accepted: 18 April 2013   /Published: 30 April 2013

Digital Sensors and Sensor Sysstems

 

Abstract: To improve the time synchronization energy efficiency for wireless sensor networks and solve the problem of network overhead, reduce energy cost, analyzed existing time synchronization algorithm, ensure that one of the core technology for wireless sensor network performance. In this paper, according to the number of nodes in wireless sensor network increases, network overhead of the traditional reference broadcast synchronization algorithm for very large problems, proposed an energy efficient wireless sensor network reference broadcast time synchronization algorithm. Firstly, only non-adjacent two of the receiving node in the plurality of reference conditions of the broadcast message and the average phase deviation and phase deviation of the calculated maximum a posteriori estimation; followed by least squares linear regression method the periodic fit clock skew, the synchronization process is completed. The algorithm in synchronization accuracy achieved some improvements, at the same time, effectively reducing the energy consumption of the network.

 

Keywords: Time synchronization, Wireless sensor network, Internet of things, delay, Synchronization control

 

 

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