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http://dx.doi.org/10.6109/jkiice.2011.15.12.2563

Network Time Protocol Extension for Wireless Sensor Networks  

Hwang, So-Young (부산가톨릭대학교)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.15, no.12, 2011 , pp. 2563-2567 More about this Journal
Abstract
Advances in smart sensors, embedded systems, low-power design, ad-hoc networks and MEMS have allowed the development of low-cost small sensor nodes with computation and wireless communication capabilities that can form distributed wireless sensor networks. Time information and time synchronization are fundamental building blocks in wireless sensor networks since many sensor network applications need time information for object tracking, consistent state updates, duplicate detection and temporal order delivery. Various time synchronization protocols have been proposed for sensor networks because of the characteristics of sensor networks which have limited computing power and resources. However, none of these protocols have been designed with time representation scheme in mind. Global time format such as UTC TOD (Universal Time Coordinated, Time Of Day) is very useful in sensor network applications. In this paper we propose network time protocol extension for global time presentation in wireless sensor networks.
Keywords
Wireless Sensor Networks; Time Synchronization; Global Time; Network Time Protocol;
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