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Energy-efficient network protocols for wireless sensor and actor networks.

机译：无线传感器和actor网络的节能网络协议。

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摘要

Wireless sensor networks (WSNs) have a wide variety of applications in civilian, medical and military applications. However, the nodes in such a network are limited to one type of action: sensing the environment . With increasing requirements for intelligent interaction with the environment, there is a need to not only perceive but also control the monitored environment. This has led to the emergence of a new class of networks, referred to as wireless sensor and actor networks (WSANs), capable of performing both sensing and acting tasks on the environment. The architecture for a WSAN comprises of three entities: (i) sensors, that monitor the environment and report the information to a central coordination entity, referred to as a sink (ii) actors, that operate on the environment based on the command issued by the sink, and (iii) a sink, that acts as a central coordination entity and sends queries and commands to sensors and actors respectively.;The evolution from WSNs, which can be thought of as performing only read operations, to WSANs, which can perform both read and write operations, introduces unique and new challenges that need to be addressed. The focus of this research is to investigate these unique problems that arise in the context of a WSAN environment, and design energy- and resource-efficient network protocols best suited to this environment. Specifically, in this research, we investigate problems from three different perspectives: (i) operation correctness, (ii) resource optimality, and (iii) operation performance. Addressing the problems on these three fronts provides the basis for effective operation of WSANs.;The introduction of acting task in WSANs, which can be viewed as a write operation, raises the need for write-specific mechanisms in WSANs in order to ensure correctness of operation. In this context, we address the problem pertaining to the ordered execution of queries and commands initiated by the sink, where the queries and commands are executed in the same order as issued by the sink. Also, since an acting task is more resource-intensive, only the desired set of actors need to execute a command for optimizing the overall resource consumption. In this context, we consider the problem pertaining to the determination of the minimal set of sensors and actors that fully covers the event occurrence region. To provide better operation performance, we consider the problem of the ideal rate of forwarding from sink-to-sensors (downstream) to minimize the local and global congestion in the network. This is necessary in order to ensure reliable and fast message delivery to the actors and sensors in the network.;The strategy adopted to achieve the research objective is (i) to first develop a distributed, energy-efficient approach to ensure ordered execution of the queries and commands among the sensors and actors in the event occurrence region, (ii) to determine the minimal set of sensors and actors that participates in an event region in order to minimize the resource consumption of the network, and (iii) to determine, in a distributed fashion, the ideal rate of forwarding for queries and commands to sensors and actors (from the sink). The protocols, when applied in unison, aid each other in developing an energy- and resource-efficient communication framework for addressing the problems unique to a WSAN environment.
机译：无线传感器网络（WSN）在民用，医疗和军事应用中具有广泛的应用。但是，这种网络中的节点仅限于一种类型的动作：感知环境。随着对与环境进行智能交互的要求不断提高，不仅需要感知而且还需要控制受监控的环境。这导致出现了一种新型的网络，称为无线传感器和行动者网络（WSAN），能够在环境中执行传感和代理任务。 WSAN的体系结构包括三个实体：（i）传感器，用于监视环境并将信息报告给称为接收器的中央协调实体（ii）参与者，它们根据由以下人员发布的命令在环境上进行操作接收器，以及（iii）接收器，充当中心协调实体，分别向传感器和参与者发送查询和命令。从WSN（可以认为仅执行读取操作）到WSAN的演进同时执行读写操作，引入了需要解决的独特和新挑战。这项研究的重点是调查WSAN环境中出现的这些独特问题，并设计最适合此环境的节能和资源高效的网络协议。具体而言，在这项研究中，我们从三个不同的角度研究问题：（i）运营正确性，（ii）资源最优性和（iii）运营绩效。解决这三个方面的问题为WSAN的有效运行提供了基础。WSAN中的代理任务的引入（可以看作是写操作）提出了WSAN中针对写特定机制的需求，以确保WSAN的正确性。操作。在这种情况下，我们解决了与接收器发起的查询和命令的有序执行有关的问题，其中查询和命令以与接收器发出的相同顺序执行。而且，由于表演任务更加耗费资源，因此仅所需的一组表演者需要执行命令以优化整体资源消耗。在这种情况下，我们考虑与确定完全覆盖事件发生区域的最小传感器和参与者集合有关的问题。为了提供更好的操作性能，我们考虑了从接收器到传感器（下游）的理想转发速率问题，以最大程度地减少网络中的本地和全局拥塞。为了确保向网络中的参与者和传感器可靠，快速地传递消息，这是必需的。为了实现研究目标而采取的策略是（i）首先开发一种分布式，高能效的方法，以确保有序地执行在事件发生区域中的传感器和参与者之间进行查询和命令；（ii）确定参与事件区域的传感器和参与者的最小集合，以最小化网络的资源消耗；以及（iii）确定，以分布式方式，是查询和命令（从接收器）到传感器和参与者的理想转发速率。协议统一使用时，可以互相帮助，共同开发一种节能高效的通信框架，以解决WSAN环境特有的问题。

著录项

  • 作者

    Vedantham, Ramanuja.;

  • 作者单位

    Georgia Institute of Technology.;

  • 授予单位 Georgia Institute of Technology.;
  • 学科 Engineering Electronics and Electrical.
  • 学位 Ph.D.
  • 年度 2006
  • 页码 150 p.
  • 总页数 150
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;
  • 关键词

  • 入库时间 2022-08-17 11:40:29

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