Distributed approach for Clock Synchronization Algorithm in WSN

Wireless sensor network has been a field where node’s clock synchronization has been a huge problem from decades to successfully transmit the data from source to destination there have been many research works about clock synchronization in Wireless sensor network in the literature and so many methods and protocols are proposed. Existing time synchronization algorithms provide on average good synchronization between a whole network, however, as we show in this paper, neighbour nodes in a network may be synchronized poorly. We propose the Distributed Clock Synchronization Algorithm (DCSA) which is designed to provide accurately synchronized clocks between nearest-neighbours. DCSA works in a completely decentralized fashion: Every node periodically broadcasts its time information. Synchronization messages received from direct neighbours are used to calibrate the logical clock. The algorithm requires neither a tree topology nor a reference node, which makes it robust against link and node failures.