Adaptive Time Synchronization for Homogeneous WSNs
Wireless Sensor Networks (WSNs) are being used for observing real-world phenomenon. It is important that Sensor Nodes (SNs) must be synchronized to a common time in order to precisely map the data collected by SNs. Clock synchronization is very challenging in WSNs as the sensor networks are resource constrained networks. It is essential that clock synchronization protocols designed for WSNs must be light weight i.e., SNs must be synchronized with fewer synchronization message exchanges. In this paper, the authors propose a clock synchronization protocol for WSNs where first of all Cluster Heads (CHs) are synchronized with the sink and then the Cluster Nodes (CNs) are synchronized with their respective CHs.