Robust and Energy Efficient Clock Synchronization Scheme for Wireless Sensor Networks
محل انتشار: بیست و یکمین کنفرانس مهندسی برق ایران
سال انتشار: 1392
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 770
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شناسه ملی سند علمی:
ICEE21_435
تاریخ نمایه سازی: 27 مرداد 1392
چکیده مقاله:
In this paper, a robust and energy efficient clock synchronization protocol for wireless sensor networks is introduced. In the proposed scheme a pair of nodes is synchronizedby a sender-receiver synchronization protocol while the third node in their range can synchronize with them by overhearingthe transmitted messages. This node is synchronized by a new receiver-receiver synchronization protocol without exchanging any extra messages which helps to save its energy. Then, using this fact that this three nodes form a loop, each pair of them can reduce their synchronization error by exchanging their estimatedrelative clock offsets. We show that the developed receiverreceiver scheme outperforms the classic liner regression basedprotocols in terms of synchronization accuracy by analysis. Also, the developed scheme is robust against the link delay varianceby using the exact relation between the nodes’ synchronization error in the loop. Simulation results are provided to justify the analytical derivation and comparisons with another scheme
نویسندگان
Maryam Sadat Rasouli Danesh
K. N. Toosi university of technology