Implementation of a Network-wide Time Synchronization Strategy for WirelessHART
Sheng Zhang, Zhongsheng Xiang, Jie Chen · 2015
WirelessHART is an international wireless communication standard proposed by HART Communication Foundation.As a crucial technique for wireless networks, time synchronization plays an important role especially in WirelessHART networks.For constant and reliable communication, it is necessary to provide precise network-wide time synchronization for TDMAbased WirelessHART.The network-wide time synchronization (NWTS) on an open source platform named OMNeT++ was implemented in this paper.In addition, we not only adopted a proposed Kalman-Filtering algorithm to ensure the precise synchronization but also designed a NWTS mechanism for WirelessHART.Moreover, we detailedly designed the mechanism of selecting and synchronizing the time reference sources (TRSs).Finally, we evaluated this implementation and made a comparison to TPSN in the aspect of error, robustness and power consumption.