Energy-Aware Node Placement, Topology Control and MAC Scheduling for Mesh-Based Wireless Sensor Networks
學年 97
學期 1
發表日期 2008-08-01
作品名稱 Energy-Aware Node Placement, Topology Control and MAC Scheduling for Mesh-Based Wireless Sensor Networks
作品名稱（其他語言）
著者 張志勇; Chang, Chih-yung
作品所屬單位 淡江大學資訊工程學系
出版者 Amsterdam: Elsevier BV * North-Holland
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摘要 In the WSNs, the nodes closer to the sink node have heavier traffic load for packet forwarding because they do not only collect data within their sensing range but also relay data for nodes further away. The unbalanced power consumption among sensor nodes may cause network partition. This paper proposes efficient node placement, topology control, and MAC scheduling protocols to prolong the sensor network lifetime, balance the power consumption of sensor nodes, and avoid collision. Firstly, a virtual tree topology is constructed based on Grid-based WSNs. Then two node-placement techniques, namely Distance-based and Density-based deployment schemes, are proposed to balance the power consumption of sensor nodes. Finally, a collision-free MAC scheduling protocol is proposed to prevent the packet transmissions from collision. in addition, extension of the proposed protocols are made from a Grid-based WSN to a randomly deployed WSN, enabling the developed energy-balanced schemes to be generally applied to randomly deployed WSNs. Simulation results reveal that the developed protocols can efficiently balance each sensor node's power consumption and prolong the network lifetime in both Grid-based and randomly deployed WSNs. (C) 2008 Elsevier B.V. All rights reserved.
關鍵字 network deployment; topology control; MAC scheduling; wireless sensor networks (WSNs); energy balancing
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出處 Computer Networks 52(11), pp.2189–2204
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