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A Revised Timing-sync Protocol for Sensor Networks by a Polling Method
Journal of The Korea Society of Computer and Information
Abbr :
JKSCI
2015, 20(8), pp.23-28
Publisher : The Korean Society Of Computer And Information
Research Area : Computer Science
2015, 20(8), pp.23-28
Publisher : The Korean Society Of Computer And Information
Research Area : Computer Science
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TPSN(Timing-sync Protocol for Sensor Networks), the representative of time synchronization protocol for WSN(wireless sensor networks), was developed to provide higher synchronization accuracy and energy efficiency. So, TPSN’s approach has been referenced by so many other WSN synchronization schemes till now. However, TPSN has a collision problem due to simultaneous transmission among competing nodes, which causes more network convergence delay for a network-wide synchronization. A Polling-based scheme for TPSN is proposed in this paper. The proposed scheme not only shortens network-wide synchronization time of TPSN, but also reduce collision traffic which lead to needless power consumption. The proposed scheme's performance has been evaluated and compared with an original scheme by simulation. The results are shown to be better than the original algorithm used in TPSN.
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