Time Synchronization and Energy Efficiency in Wireless Sensor Networks

Ageev, Anton (2010) Time Synchronization and Energy Efficiency in Wireless Sensor Networks. PhD thesis, University of Trento.

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Time synchronization is of primary importance for the operation of wireless sensor networks (WSN): time measurements, coordinated actions and event ordering require common time on WSN nodes. Due to intrinsic energy limitations of wireless networks there is a need for new energy-efficient time synchronization solutions, different from the ones that have been developed for wired networks. In this work we investigated the trade-offs between time synchronization accuracy and energy saving in WSN. On the basis of that study we developed a power-efficient adaptive time synchronization strategy, that achieves a target synchronization accuracy at the expense of a negligible overhead. Also, we studied the energy benefits of periodic time synchronization in WSN employing synchronous wakeup schemes, and developed an algorithm that finds the optimal synchronization period to save energy. The proposed research improves state-of-the-art by exploring new ways to save energy while assuring high flexibility and reliable operation of WSN.

Item Type:Doctoral Thesis (PhD)
Doctoral School:Information and Communication Technology
PhD Cycle:XXII
Subjects:Area 01 - Scienze matematiche e informatiche > INF/01 INFORMATICA
Area 09 - Ingegneria industriale e dell'informazione > ING-INF/03 TELECOMUNICAZIONI
Area 09 - Ingegneria industriale e dell'informazione > ING-INF/01 ELETTRONICA
Uncontrolled Keywords:wireless sensor networks, time synchronization, energy eciency, time uncertainty
Repository Staff approval on:29 Apr 2010 16:00

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