Title :
TSMU: A Time Synchronization Scheme for Mobile Underwater Sensor Networks
Author :
Liu, Jun ; Wang, Zhaohui ; Peng, Zheng ; Zuba, Michael ; Cui, Jun-Hong ; Zhou, Shengli
Author_Institution :
Underwater Sensor Network Lab., Univ. of Connecticut, Storrs, CT, USA
Abstract :
Time synchronization plays a critical role in distributed network systems. In this paper, we investigate the time synchronization problem in the context of underwater sensor networks (UWSNs). We propose a pairwise, cross-layer, time synchronization scheme for mobile underwater sensor networks, called TSMU. Facilitated by the Kalman Filter, the proposed method greatly improves the dynamic propagation delay estimation by exploring the Doppler effect. Simulation results show that TSMU outperforms existing synchronization schemes in both accuracy and energy efficiency.
Keywords :
Doppler effect; Kalman filters; energy conservation; marine communication; mobile radio; synchronisation; wireless sensor networks; Doppler effect; Kalman filter; cross-layer synchronization scheme; distributed network system; dynamic propagation delay estimation; energy efficiency; mobile underwater sensor network; pairwise synchronization scheme; time synchronization scheme; Accuracy; Calibration; Doppler effect; Estimation; Peer to peer computing; Propagation delay; Synchronization;
Conference_Titel :
Global Telecommunications Conference (GLOBECOM 2011), 2011 IEEE
Conference_Location :
Houston, TX, USA
Print_ISBN :
978-1-4244-9266-4
Electronic_ISBN :
1930-529X
DOI :
10.1109/GLOCOM.2011.6134447
