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http://dx.doi.org/10.7471/ikeee.2012.16.2.086

An Energy-Efficient Asynchronous Sensor MAC Protocol Design for Wireless Sensor Networks  

Park, In-Hye (광운대학교 전자정보공과대학 컴퓨터공학과)
Lee, Hyung-Keun (광운대학교 전자정보공과대학 컴퓨터공학과)
Kang, Seok-Joong (광운대학교 전자정보공과대학 컴퓨터공학과)
Publication Information
Journal of IKEEE / v.16, no.2, 2012 , pp. 86-94 More about this Journal
Abstract
Synchronization MAC Protocol such as S-MAC and T-MAC utilize duty cycling technique which peroidically operate wake-up and sleep state for reducing energy consumption. But synchronization MAC showed low energy efficiency because of additional control packets. For better energy consumption, Asychronization MAC protocols are suggested. For example, B-MAC, and X-MAC protocol adopt Low Power Listening (LPL) technique with CSMA algorithm. All nodes in these protocols joining a network with independent duty cycle schedules without additional synchronization control packets. For this reason, asynchronous MAC protocol improve energy efficiency. In this study, a low-power MAC protocol which is based on X-MAC protocol for wireless sensor network is proposed for better energy efficiency. For this protocol, we suggest preamble numbering, and virtual-synchronization technique between sender and receive node. Using TelosB mote for evaluate energy efficiency.
Keywords
X-MAC; LPL;
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