A simple dynamic clustering approach to achieve energy efficiency for wireless sensor networks Giljae Lee Yoonjoo Kwon Woojin Seok Minsun Lee
Article information:To cite this document: Giljae Lee Yoonjoo Kwon Woojin Seok Minsun Lee, (2008),"A simple dynamic clustering approach to achieve energy efficiency for wireless sensor networks"Abstract Purpose -Recent wireless communication and electronics technology has enabled the development of low-cost, low-power, and multi-functional sensor nodes. However, the fact that sensor nodes are severely energy-constrained has been an issue and many energy-efficient routing protocols have been proposed to resolve it. Cluster-based routing protocol is one of them. To achieve longer lifetime, some cluster-based routing protocols use information on GPS-based location of each sensor node. However, because of high cost, not all sensor nodes can be GPS-enabled. The purpose of this paper is to propose a simple dynamic clustering approach to achieve energy efficiency for wireless sensor networks (WSN). Design/methodology/approach -Instead of using location information of each sensor node, this approach utilizes information of remaining energy of each sensor node and changes in the number of cluster head nodes dependent on the number of sensor nodes alive. Performance results are presented and compared with some related protocols. Findings -The simulations described in the paper show that both residual energy of each sensor node and changing cluster head nodes depending on the number of sensor nodes alive are very critical factors to obtain performance enhancement in terms of lifetime and data transmission. Especially, in some special environment, the proposal has better performance than GPS-enabled protocol. Originality/value -The paper is of value in proposing a simple dynamic clustering approach to achieve energy efficiency for WSN.
In this paper, we propose an experimental environment which can be accessed by remote users, where they can select their preferred operating system, and they can use the Power Controllable systems with full permission to access them. The goal of the proposed systems is to provide an experimental environment for the users to join the international experiment that needs high bandwidth network. In order to do that, we provide high performance systems that is directly connected to back-bone network, and we also provide the ability of users to install any application on various operating system. In addition, we provide the ability to keep continuing the system environment of users in shared system environment. We will show how the proposed systems are useful for the users in terms of the user-efficiency to utilize the environment and the response time for the set-up time.This new proposed environments will provide a new experimental method for the scientists who works for international collaborative experimental researches.
주저자:한국과학기술정보연구원, 첨단연구망센터,
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