无线传感器网络自适应多业务路由协议

Jaydip Sen
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引用次数: 6

摘要

无线传感器网络(wsn)是高度分布式的网络,由大量微小、低成本、轻量级的无线节点组成,用于监控环境或系统。WSN中的每个节点由三个子系统组成:感知环境的传感器子系统,对感知数据进行本地计算的处理子系统,以及负责与相邻传感器节点进行消息交换的通信子系统。虽然单个传感器节点的感知区域、处理能力和能量有限,但大量传感器节点的组网可以形成一个覆盖广泛区域的鲁棒、可靠和精确的传感器网络。因此,无线传感器网络中的路由是一个非常重要的问题。本文提出了一种基于查询的WSN路由协议,该协议在不同的应用场景下提供不同级别的服务质量(QoS):节能、可靠、低延迟和容错。该算法计算复杂度低,可根据应用需求动态保证不同的QoS支持。该算法的新颖之处在于它能够在不重新配置和重新部署传感器节点的情况下提供多个QoS支持。在网络模拟器ns-2中实现了该算法,并对其性能进行了评价。结果表明,该算法比现有的一些无线传感器网络路由算法效率更高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
An adaptive and multi-service routing protocol for Wireless Sensor Networks
Wireless Sensor Networks (WSNs) are highly distributed networks consisting of a large number of tiny, low-cost, light-weight wireless nodes deployed to monitor an environment or a system. Each node in a WSN consists of three subsystems: the sensor subsystem which senses the environment, the processing subsystem which performs local computations on the sensed data, and the communication subsystem which is responsible for message exchange with neighboring sensor nodes. While an individual sensor node has limited sensing region, processing power, and energy, networking a large number of sensor nodes give rise to a robust, reliable, and accurate sensor network covering a wide region. Thus, routing in WSNs is a very important issue. This paper presents a query-based routing protocol for a WSN that provides different levels of Quality of Service (QoS): energy-efficiency, reliability, low latency and fault-tolerance-under different application scenarios. The algorithm has low computational complexity but can dynamically guarantee different QoS support depending on the requirement of the applications. The novelty of the proposed algorithm is its ability to provide multiple QoS support without reconfiguration and redeployment of the sensor nodes. The algorithm is implemented in network simulator ns-2 and its performance has been evaluated. The results show that the algorithm is more efficient than some of the currently existing routing algorithms for WSNs.
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