TY - GEN
T1 - Time Synchronization and Clock Parameter Estimation for Wireless Sensor Networks with Unequal Propagation Delays
AU - Liu, Guopeng
AU - Yan, Shefeng
AU - Mao, Linlin
AU - Sui, Zeping
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/8/21
Y1 - 2020/8/21
N2 - Time synchronization is a prerequisite and also a critical support technique for wireless sensor networks (WSNs). Traditional synchronization protocols have some drawbacks, such as limited synchronization accuracy, high energy consumption, and strict node deployment requirement, which limits their application in underwater WSNs. In view of the shortcomings of the traditional schemes, we propose an energy-efficient synchronization protocol which explores the nature of broadcasting to save energy. Based on the proposed protocol, the minimum variance unbiased estimation (MVUE) of the clock offsets is further derived to obtain higher synchronization accuracy. Remarkably, the proposed protocol can be applied to randomly deployed WSNs with unequal propagation delays, especially underwater WSNs. Simulation results confirm the superiority of the proposed protocol in both terrestrial and underwater WSNs.
AB - Time synchronization is a prerequisite and also a critical support technique for wireless sensor networks (WSNs). Traditional synchronization protocols have some drawbacks, such as limited synchronization accuracy, high energy consumption, and strict node deployment requirement, which limits their application in underwater WSNs. In view of the shortcomings of the traditional schemes, we propose an energy-efficient synchronization protocol which explores the nature of broadcasting to save energy. Based on the proposed protocol, the minimum variance unbiased estimation (MVUE) of the clock offsets is further derived to obtain higher synchronization accuracy. Remarkably, the proposed protocol can be applied to randomly deployed WSNs with unequal propagation delays, especially underwater WSNs. Simulation results confirm the superiority of the proposed protocol in both terrestrial and underwater WSNs.
KW - Time synchronization
KW - clock offset
KW - exponential delay
KW - minimum variance unbiased estimation
KW - wireless sensor networks
UR - http://www.scopus.com/inward/record.url?scp=85097955027&partnerID=8YFLogxK
U2 - 10.1109/ICSPCC50002.2020.9259527
DO - 10.1109/ICSPCC50002.2020.9259527
M3 - Conference contribution
AN - SCOPUS:85097955027
T3 - ICSPCC 2020 - IEEE International Conference on Signal Processing, Communications and Computing, Proceedings
BT - ICSPCC 2020 - IEEE International Conference on Signal Processing, Communications and Computing, Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2020 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2020
Y2 - 21 August 2020 through 23 August 2020
ER -