An Energy-Efficient Multi-agent Based Architecture in Wireless Sensor Network
Wireless sensor network (WSN) containing thousands of tiny and low-power nodes can be used to monitor environment. An energy-efficient and reliable wireless communication architecture is usually required. In this paper, we propose a novel energy-efficient
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Abstract. Wireless sensor network (WSN) containing thousands of tiny and low-power nodes can be used to monitor environment. An energy-efficient and reliable wireless communication architecture is usually required. In this paper, we propose a novel energy-efficient multi-agent based architecture (EEMA), which is based on a clustering algorithm and multi-agent system to reduce the redundant messages and filter most error messages. EEMA consists of three important agents: classification agent, error agent and filter agent which divide messages processing into three different phases separately and achieve different functions. The simulation results show that EEMA can outperform LEACH and ECDG. It can distinctly prolong the lifetime of the system and improve the system reliability. Keywords: Agent, Wireless Sensor Network, energy efficient.
1 Introduction Wireless sensor networks (WSN) are undergoing rapid progress and inspiring numerous applications more and more. However, challenges and difficulties still exist: (1) the sensor nodes own limited power, processing and sensing ability. (2) The sensor nodes are prone to failure because of lack of power, physical damage etc; (3) since the information generated by a single node is usually incomplete or inaccurate, and the applications need collaborative communication and computation among multiple sensors [1]. Therefore, the applications need an architecture which can efficiently sense and transact the data with less energy dissipation as well as fault tolerant [3]. In this paper, we present an intelligent architecture, an energy-efficient multiagent based architecture (EEMA), which is based on clustering algorithm and multiagent system. By reducing unnecessary or redundant messages as well as error messages, EEMA achieves good energy efficiency and network performance. ∗
The corresponding author. This work was supported by the Second Brain Korea 21 Project.
Y. Zhang et al. (Eds.): APWeb 2008, LNCS 4976, pp. 124–129, 2008. © Springer-Verlag Berlin Heidelberg 2008
An Energy-Efficient Multi-agent Based Architecture in Wireless Sensor Network
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The rest of the paper is organized as follows: In section 2, the related work is briefly reviewed. In section 3, we introduce the multi-agent architecture with three agents, classification agent, error agent and filter agent. In section 4, we give the simulation results for the multi-agent architecture. In section 5, we conclude the paper with a summary of the main ideas and directions for future work.
2 Related Work Clustering algorithm has been fundamental and widely used technique in WSN. In [1], an energy efficient adaptive clustering protocol (LEACH) is presented, which employs a hierarchical clustering, and the nodes organize themselves into clusters and elect a node as cluster head (CH) for each cluster. The CHs collect and aggregate information from sensors and pass them to the base station. In this way it does realize a large reduction in energy consumption. In [2], an efficient clustering of data gathering protocol (E
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