Analysis of the Lifetime of Large Wireless Sensor Networks
In large wireless sensor networks, nodes are required to self-organize them into a network without previously established infrastructure. Large numbers of sensor nodes are scattered throughout the area to be monitored. All data collected by the nodes is to be sent to the sink node in a multi-hop fashion. The sensors closer to the sink have to relay more messages than nodes at the periphery of the network. This burden significantly shortens the lifespan of these nodes; the network may become disconnected while considerable energy remains unused at the peripheral nodes. To alleviate this undesired effect, we investigate the energy consumption of different layers, and demonstrate a powerful simple scheme to redistribute the total energy budget in different tiers. We show by theoretical analysis, as well as simulation, that this substantially improves the network lifetime.
wireless sensor networks energy efficient network lifetime
Ruihua ZHANG DongfengYUAN Quanquan LIANG
School of Computer Science and Technology Shandong University, Jinan 250061, China School of Information Science and Engineering Shandong University, Jinan 250100, China
国际会议
上海
英文
2007-09-21（万方平台首次上网日期，不代表论文的发表时间）