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The Simple Wakeup Scheduling Protocols Considering Sensing Coverage in Wireless Sensor Networks  

Cho, Jae-Kyu (서울대학교 전기컴퓨터공학부 멀티미디어/이동통신 연구실)
Kim, Gil-Soo (서울대학교 전기컴퓨터공학부 멀티미디어/이동통신 연구실)
Kwon, Tae-Kyoung (서울대학교 전기컴퓨터공학부 멀티미디어/이동통신 연구실)
Choi, Yang-Hee (서울대학교 전기컴퓨터공학부 멀티미디어/이동통신 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.34, no.1A, 2009 , pp. 41-49 More about this Journal
Abstract
A crucial issue in deploying wireless sensor networks is to perform a sensing task in an area of interest in an energy-efficient manner since sensor nodes have limited energy Power. The most practical solution to solve this problem is to use a node wake-up scheduling protocol that some sensor nodes stay active to provide sensing service, while the others are inactive for conserving their energy In this paper, we present a simple wake-up scheduling protocol, which can maintain sensing coverage required by applications and yet increase network lifetime by turning off some redundant nodes. In order to do this, we use the concept of a weighted average distance. A node decides whether it is active or inactive based on the weighted average distance. The proposed protocol allows sensor nodes to sleep dynamically while satisfying the required sensing coverage.
Keywords
Wireless sensor network; Wakeup scheduling; Sensing coverage; Energy efficiency;
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