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Energy-efficient collaborative data transmissions in wireless sensor networks.

机译：无线传感器网络中的节能协作数据传输。

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摘要

Wireless sensor networks provide great potential for environment monitoring and military missions. In many applications, sensor nodes need to be deployed far away from the base station, where the data are collected, stored, and analyzed. Long distance transmissions are often required in wireless sensor networks and they consume significant amounts of energy. Collaborative beamforming achieve long distance, yet low energy consuming, transmissions by means of multiple simultaneous nodes transmitting the same data to the same receiver. However, each type of collaborative transmission introduces some energy overhead due to additional steps. This dissertation presents several techniques in achieving energy-efficient collaborative transmissions in wireless sensor networks. It addresses the following questions: (1) whether collaborative transmissions save energy, and what are the determining key factors, (2) how to perform collaborative transmissions in order to prolong the network lifetime, and (3) how to perform collaborative transmissions to extend the transmission distance. The first question is addressed by studying the various steps in achieving collaborative beamforming transmissions using different approaches. This dissertation analyzes the factors that affect the energy savings for beamforming transmissions. The second question is addressed by proposing an energy-efficient transmitter scheduling algorithm to balance the energy consumption over the network, hence prolonging the network lifetime. Finally, the third question is addressed by proposing a method to use beamforming in multi-hop transmissions to extend the transmission distance between hops.
机译：无线传感器网络为环境监测和军事任务提供了巨大的潜力。在许多应用中，需要将传感器节点部署在远离基站的位置，在基站中收集，存储和分析数据。无线传感器网络中经常需要长距离传输，并且它们消耗大量能量。协作波束成形通过多个同时节点将同一数据传输到同一接收器来实现长距离但低能耗的传输。然而，由于额外的步骤，每种类型的协作式传输都会引入一些能量开销。本文提出了几种在无线传感器网络中实现节能协作传输的技术。它解决了以下问题：（1）协作传输是否节省能源，确定的关键因素是什么；（2）如何执行协作传输以延长网络寿命，以及（3）如何执行协作传输以扩展传输距离。通过研究使用不同方法实现协作波束成形传输的各个步骤来解决第一个问题。本文分析了影响波束赋形传输节能的因素。通过提出一种高能效的发射机调度算法来平衡网络上的能源消耗，从而延长网络寿命，可以解决第二个问题。最后，通过提出一种在多跳传输中使用波束成形来扩展跳之间的传输距离的方法来解决第三个问题。

著录项

  • 作者

    Feng, Jing.;

  • 作者单位

    Purdue University.;

  • 授予单位 Purdue University.;
  • 学科 Engineering Computer.;Engineering General.
  • 学位 Ph.D.
  • 年度 2012
  • 页码 136 p.
  • 总页数 136
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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