An Energy-efficient Clock Synchronization Protocol for Wireless Sensor Networks
Roxana Albu (LAAS), Yann Labit (LAAS), Gayraud Thierry (LAAS), Berthou, Pascal (LAAS)

TL;DR
This paper presents a novel energy-efficient clock synchronization protocol for wireless sensor networks that combines IEEE 1588 and PBS protocols to achieve high accuracy and significant energy savings.
Contribution
It introduces a combined synchronization protocol tailored for WSNs, improving accuracy and energy efficiency over existing methods.
Findings
Achieves clock synchronization accuracy up to a tenth of a microsecond.
Significantly reduces energy consumption compared to traditional protocols.
Performance validated through NS-2 simulations.
Abstract
The behavior of Wireless Sensor Networks (WSN) is nowadays widely analyzed. One of the most important issues is related to their energy consumption, as this has a major impact on the network lifetime. Another important application requirement is to ensure data sensing synchronization, which leads to additional energy consumption as a high number of messages is sent and received at each node. Our proposal consists in implementing a combined synchronization protocol based on the IEEE 1588 standard that was designed for wired networks and the PBS (Pairwise Broadcast Synchronization) protocol that was designed for sensor networks, as none of them is able to provide the needed synchronization accuracy for our application on its own. The main goals of our new synchronization protocol are: to ensure the accuracy of local clocks up to a tenth of a microsecond and to provide an important energy…
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