DispersiveCast: Dispersive Packets Transmission to Multiple sinks for Energy Saving in Sensor Networks
DispersiveCast: Dispersive Packets Transmission to Multiple sinks for Energy Saving in Sensor Networks
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DOI：
10.1109/pimrc.2006.254190
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发表时间：
2006-12
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影响因子：
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通讯作者：
Takaaki Suzuki;M. Bandai;Takashi Watanabe
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文献类型：
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作者：
Takaaki Suzuki;M. Bandai;Takashi Watanabe
为了节省电池能量和提高网络寿命，本文提出了两种多节点无线传感器网络方案。在这些方案中，每个传感器节点根据发送速率将传感数据发送到随机选择的sink中。这些方案被称为分散广播。第一种分散方案称为B-DOP方案（数据包的基本分散播），它使每个传感器节点能够根据到sink的跳数在本地获得发送速率。第二种是O-DOP方案（数据包的最优分散播），它比B-DOP部分集中。在O-DOP中，sink将信息发送给节点，由节点计算出最佳的发送速率。当每个传感器节点的数据生成速率不均匀时，弥散播算法是有效的。在这种情况下，特定区域的节点电池消耗快，其他区域的节点电池消耗晚，导致整个网络的部分耗尽。因此，网络的生存期不能得到充分的延长。通过对几种网络拓扑的仿真，对该方案进行了评价，结果表明，与传统的最近汇聚方案相比，该方案延长了网络的生存期，特别是O-DOP可以达到1.5倍的生存期
This paper proposes two schemes for wireless sensor networks with multiple sinks in order to save battery energy and to improve network lifetime performance. In these schemes, each sensor node transmits sensing data to randomly chosen sink according to the sending rates. These schemes are referred to as DispersiveCast. The first decentralized scheme called B-DOP scheme (basic DispersiveCast of packet), enables each sensor node to derive locally the sending rate by the number of hops to sinks. The second one is O-DOP scheme (optimal DispersiveCast of packet) that is partially centralized than B-DOP. In O-DOP, sinks send the information to nodes so as for them to calculate the optimal sending rates. DispersiveCast is effective when the generate rate of sensing data at every sensor node geographical nonuniformity. In such a situation, batteries of nodes in the specific area deplete fast and others late, which causes partial depletion of the entire network. As a result, network lifetime can not be extended sufficiently. We evaluate the DispersiveCast schemes by simulations for several network topologies and show that DispersiveCast scheme prolongs the network lifetime compared with the conventional nearest sink scheme, especially O-DOP can achieve 1.5 times longer