A Novel Cluster Based Time Synchronization Technique for Wireless Sensor Networks
Open Access
- 1 January 2017
- journal article
- research article
- Published by Scientific Research Publishing, Inc. in Wireless Sensor Network
- Vol. 09 (05), 145-165
- https://doi.org/10.4236/wsn.2017.95008
Abstract
Time synchronization is one of the important aspects in wireless sensor networks. Time synchronization assures that all the sensor nodes in wireless sensor network have the same clock time. There are various applications such as seismic study, military applications, pollution monitoring where sensor nodes require synchronized time. Time synchronization is mandatory for many wireless sensor networks protocols such as MAC protocols and also important for TDMA scheduling for proper duty cycle coordination. Time synchronization is a stimulating problem in wireless sensor networks because each node has its own local clock which keeps on varying due to variation in the oscillator frequency. The oscillator frequency is time varying due to ambient conditions which leads to re-synchronization of nodes time and again. This re-synchronization process is energy consuming whereas energy is constraints in WSN. This paper proposes a novel cluster based time synchronization technique for wireless sensor networks in which cluster head rotation is based on minimum clock offset. Simulation results based on energy analysis of the proposed model demonstrate that proposed novel cluster based time synchronization technique reduces the energy consumption and also the synchronization error compared with other existing protocols.Keywords
This publication has 21 references indexed in Scilit:
- An Energy Efficient Multihop Hierarchical Routing in Wireless sensor NetworksIOSR Journal of Electronics and Communication Engineering, 2013
- Programming wireless sensor networksACM Computing Surveys, 2011
- Energy-Efficient Routing Protocol for Wireless Sensor Networks with Static Clustering and Dynamic StructureWireless Personal Communications, 2011
- AN ESTIMATION OF SENSOR ENERGY CONSUMPTIONProgress In Electromagnetics Research B, 2009
- A Survey of Application Distribution in Wireless Sensor NetworksEURASIP Journal on Wireless Communications and Networking, 2005
- An application-specific protocol architecture for wireless microsensor networksIEEE Transactions on Wireless Communications, 2002
- Middleware challenges for wireless sensor networksACM SIGMOBILE Mobile Computing and Communications Review, 2002
- Improved algorithms for synchronizing computer network clocksIEEE/ACM Transactions on Networking, 1995
- Probabilistic clock synchronization in distributed systemsIEEE Transactions on Parallel and Distributed Systems, 1994
- Internet time synchronization: the network time protocolIEEE Transactions on Communications, 1991