Improving the Dynamic Continuous Clock Synchronization for WSNs

Clock synchronization is an important feature in Wireless Sensor Networks, as a common vision of time can be required in order to perform synchronous operations. In this paper we present a new version of the Dynamic Continuous Clock Synchronization protocol which offers a greater robustness and requires less power than the original protocol. The role of the Reference Node which sends periodic snapshots necessary for the synchronization is in turn assigned to different slaves under the control of the time Master. The discussion in the paper explains the features and the advantages of this approach. The measurements performed on a testbed point out the effectiveness of the new protocol and its suitability for real applications.