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http://dx.doi.org/10.7840/kics.2014.39C.3.239

Low Power MAC Protocol Design for Wireless Sensor Networks using Recursive Estimation Methods  

Pak, Wooguil (계명대학교 보안 및 무선네트워크 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.39C, no.3, 2014 , pp. 239-246 More about this Journal
Abstract
In the context of wireless sensor networks, one of major issues is energy conservation. For low power communication, by utilizing our experimental results for the relation between clock drift and synchronization interval, we designed a new protocol which can support a wide range of duty cycles for applications with very low traffic rate and insensitive delay. The transmission (TX) node in the protocol synchronizes with the reception (RX) node very before transmitting a packet, and it can adaptively estimate the synchronization error size according to the synchronization interval from minutes to hours. We conducted simulations and a testbed implementation to show the efficacy of the proposed protocol. We found that our protocol substantially outperforms other state-of-the-art protocols, resulting in order-of-magnitude increase in network lifetime over a variety of duty cycles.
Keywords
Wireless sensor network; low power MAC protocol; long lifetime; Recursive estimation;
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