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LEACH-SM: A protocol for extending wireless sensor network lifetime by management of spare nodes.

机译：LEACH-SM：一种通过管理备用节点来延长无线传感器网络寿命的协议。

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摘要

Operational lifetime of a wireless sensor network (WSN) depends on its energy resources. Significant improvement of WSN lifetime can be achieved by adding spare sensor nodes to WSN. Spares are ready to be switched on when any primary (a node that is not a spare) exhausts its energy. A spare replacing a primary becomes a primary itself.;The LEACH-SM protocol (Low-Energy Adaptive Clustering Hierarchy with Spare Management) proposed by us is a modification of the prominent LEACH protocol. LEACH extends WSN lifetime via rotation of cluster heads but allows for inefficiencies due to redundant sensing target coverage. There are two energy-consumption inefficiencies in LEACH. The first one, the hotspot problem, is due to extra duties of cluster heads (as compared to regular nodes) that increase their energy usage. The second inefficiency is redundant data transmissions to cluster heads (made by regular nodes covering targets redundantly). Both inefficiencies are reduced by using spares in LEACH-SM.;LEACH-SM has three main features. First, from the subset of WSN nodes that provide redundant area coverage, we select the optimal collection of spares (to maximize extension of WSN lifetime). We overcome race conditions and deadlocks that can occur during the spare selection process. The second main feature is deciding how long spares should remain asleep, and which spares should be used as replacements for primaries that exhausted their energy. The third main feature is estimating WSN lifetime as determined by energy consumption of all its sensor nodes.;We provided analytical estimates and comparisons of LEACH and LEACH-SM for simplified cases. We also run simulation experiments (using MATLAB) to compare both protocols for general and complex cases. We studied the impact of the spare ratio and duration of the nap interval of cluster heads on the WSN lifetime for LEACH and LEACH-SM.;Even when no spares are used, LEACH-SM achieves 23% to 48% extension of the average WSN lifetime when compared to LEACH (this is due to switching off redundant nodes in LEACH-SM). When LEACH-SM uses spares, LEACH-SM achieves 183% extension of the average WSN lifetime when compared to LEACH (which is unable to use spares).
机译：无线传感器网络（WSN）的使用寿命取决于其能源。通过将备用传感器节点添加到WSN，可以实现WSN生命周期的显着改善。当任何主节点（不是备用节点）耗尽其能量时，备用节点就可以打开。用备用零件代替主零件本身成为主零件。；我们提出的LEACH-SM协议（具有备用管理功能的低能耗自适应集群层次结构）是对著名的LEACH协议的修改。 LEACH通过旋转簇状头来延长WSN的使用寿命，但由于冗余的传感目标覆盖范围而导致效率低下。 LEACH中有两种能源消耗效率低下的问题。第一个问题是热点问题，这是由于簇头的额外职责（与常规节点相比）增加了能耗。第二个低效率是冗余数据传输到群集头（由覆盖目标的常规节点进行）。通过在LEACH-SM中使用备用组件，可以降低这两种效率低下的问题。； LEACH-SM具有三个主要功能。首先，从提供冗余区域覆盖的WSN节点的子集中，我们选择备用件的最佳集合（以最大程度地延长WSN寿命）。我们克服了备件选择过程中可能出现的比赛条件和僵局。第二个主要功能是确定备用组件应保持睡眠状态的时间，以及哪些备用组件应替代耗尽其精力的原始组件。第三个主要功能是估计WSN寿命，该寿命由其所有传感器节点的能耗确定。我们为简化情况提供了LEACH和LEACH-SM的分析估计和比较。我们还运行了仿真实验（使用MATLAB），以比较一般情况和复杂情况的两种协议。我们研究了LEACH和LEACH-SM的备用比率和簇头小睡间隔的持续时间对WSN寿命的影响;即使不使用任何备用零件，LEACH-SM也会实现平均WSN的23％至48％的扩展与LEACH相比的生命周期更长（这是由于LEACH-SM中的冗余节点被关闭）。当LEACH-SM使用备件时，与LEACH（无法使用备件）相比，LEACH-SM的平均WSN寿命延长了183％。

著录项

  • 作者

    Abu Bakr, Bilal.;

  • 作者单位

    Western Michigan University.;

  • 授予单位 Western Michigan University.;
  • 学科 Computer Science.
  • 学位 Ph.D.
  • 年度 2011
  • 页码 224 p.
  • 总页数 224
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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