Time Synchronization Strategies in Wireless Sensor Network: A Review

Lately, Wireless Sensor Networks are getting lot of attention by research community. It consists of small devices distributed over geographical areas and each device has sensing, computing and communicating components. Time synchronization is vital to schedule communication and distributed measurement tasks. It targets at equalizing the local times for all nodes in the network. It has been observed from the literature survey that the task of time synchronization mainly focus on two things, firstly drift from master oriented towards master less synchronization and secondly energy efficiency techniques. Various techniques purposed in the literature have been thoroughly covered in this survey paper and related issues and challenges have been highlighted.