Efficient Clock Synchronization using Energy Based Proportional Integral and Least Common Multiple Protocol in Wireless Sensor Networks.

The packet transmission among sensor nodes mainly focuses on clock synchronization. This paper proposes a protocol for efficient clock synchronization in energy based approaches to overcome the clock synchronization invariances and communication overheads. Clustering technique helps to design the sensor network architectures and broadcast the sensor nodes. The existing Mobility Zonal Based Stable Election Protocol (Mob-ZSEP) protocol identifies best path using clustering approach. The selected best path using Mob-ZSEP routing protocol will be utilized by proposed clock synchronization protocols. This research paper proposes two novel protocols: Energy based Proportional Integral and Least Common Multiple (EPILCM) and Weighted based Least Common Multiple (WLCM). EPILCM protocol hybrids two methods such as Energy based Proportional Integral (EPI) and Energy based Least Common Multiple (ELCM). The proposed EPILCM protocol is used for clock synchronization using energy based approach which reduces energy consumption, synchronization error, propagation delay, clock inaccuracy and communication overhead. WLCM protocol performs transmission based on the weight of the packet in sensor networks. The EPILCM, WLCM protocols are compared and the simulation results shows that EPILCM protocol outperforms WLCM protocol. [ABSTRACT FROM AUTHOR]