无线传感器网络的神经网络模型

无线传感器网络是复杂的无线网络。无线传感器网络拥有大量的网络节点。网络节点是无线传感器网络的基础。为了研究复杂的无线传感器网络，采用了神经元描述了WSN的网络节点，用神经元模型表示了无线传感器网络。给出了无线待感器网络节点的神经元模型和无线传感器网络的神经网络模型，并将神经网络应用于无线传感器网络的数据融合应用。结果表明，基于神经网络的无线传感器网络研究可以使得复杂研究变得简单，利于开展WSN的深入研究。     

COSMOS: A Middleware for Integrated Data Processing over Heterogeneous Sensor Networks

With the increasing need for intelligent environment monitoring applications and the decreasing cost of manufacturing sensor devices, it is likely that a wide variety of sensor networks will be deployed in the near future. In this environment, the way to access heterogeneous sensor networks and the way to integrate various sensor data are very important. This paper proposes the common system for middleware of sensor networks (COSMOS), which provides integrated data processing over multiple heterogeneous sensor networks based on sensor network abstraction called the sensor network common interface. Specifically, this paper introduces the sensor network common interface which defines a standardized communication protocol and message formats used between the COSMOS and sensor networks.     

线性无线传感器网络探究

介绍了无线传感器网络中一种实用性很强的线性无线传感器网络,分析了线性无线传感器网络相比较一般无线传感器网络的优势以及研究中的一些难题,并从实际应用的角度分析了线性无线传感器网络的研究方向。     

A semantic-based architecture for sensor networks

With rapid development of sensor networks technology, it becomes feasible to deploy multiple sensor networks in relevant area to collect interested information. Sensor nodes that are co-located but belong to different sensor networks may not be able to collaborate properly to gain the capacity or performance. In this paper we propose a semantic-based sensor networks architecture that enables inter-networking of sensor networks. In this Semantic Sensor Net (Ssn), a semantic tag is attached to the sensory data so that the sensor networks are able to exchange information and work collaboratively. The process of semantic creation and maintenance is described. We also introduce the concept of InterSensorNet. This infrastructure enables efficient information exchange and information extraction among multiple sensor networks.     

基于完全层次树的无线传感器网络密钥共享方案研究

无线传感器网络由于其自身的特性，如计算资源、能量、存储资源以及带宽的局限性从而面临巨大的安全问题，较普通网络更易受到外界的攻击。研究了一种在无线传感器网络中使用的完全层次树的节点密钥共享方案，该方案使任意两个节点之间共享若干密钥。理论和应用分析显示所提出的方案具有有效性和安全性的特点。同时，通过相关方案比较表明该方案较其它方案更适合无线传感器网络，可以有效的抵御一类Rushing引起的网络DoS攻击。     

Time synchronization in sensor networks: a survey

Time synchronization is an important issue in multihop ad hoc wireless networks such as sensor networks. Many applications of sensor networks need local clocks of sensor nodes to be synchronized, requiring various degrees of precision. Some intrinsic properties of sensor networks, such as limited resources of energy, storage, computation, and bandwidth, combined with potentially high density of nodes make traditional synchronization methods unsuitable for these networks. Hence, there has been an increasing research focus on designing synchronization algorithms specifically for sensor networks. This article reviews the time synchronization problem and the need for synchronization in sensor networks, then presents in detail the basic synchronization methods explicitly designed and proposed for sensor networks.     

无线传感网络再编程研究

无线传感网络再编程通常作为独立于应用程序的服务实现在传感节点的操作系统之上:也是通过无线信道有效地管理和维护传感网络的一个重要功能.本文在介绍再编程面临的挑战基础上,分类研究工各种再编程协议的传播方式与可靠性,指出了安全、快速、可靠地对部署好的传感网络再编程需要解决的几个问题,提出了未来的几个研究方向与重点.     

Artificial fish-swarm based coverage-enhancing algorithm for visible light sensor networks

An artificial fish-swarm based coverage-enhancing algorithm(AFCEA) for visible light sensor networks is proposed.In AFCEA,the improved optimization algorithm is used into the solution for coverage-enhancing in directional visible light sensor networks with the rotational direction model.Compared with other classic directional sensor networks coverageenhancing algorithms,AFCEA can achieve a higher directional sensor networks coverage with less iterative computing times.     

Secure routing in wireless sensor networks: attacks and countermeasures

We consider routing security in wireless sensor networks. Many sensor network routing protocols have been proposed, but none of them have been designed with security as a goal. We propose security goals for routing in sensor networks, show how attacks against ad-hoc and peer-to-peer networks can be adapted into powerful attacks against sensor networks, introduce two classes of novel attacks against sensor networks––sinkholes and HELLO floods, and analyze the security of all the major sensor network routing protocols. We describe crippling attacks against all of them and suggest countermeasures and design considerations. This is the first such analysis of secure routing in sensor networks.     

Analyzing localization errors in one-dimensional sensor networks

One-dimensional sensor networks can be found in many fields and demand node location information for various applications. Developing localization algorithms in one-dimensional sensor networks is trivial, due to the fact that existing localization algorithms developed for two- and three-dimensional sensor networks are applicable; nevertheless, analyzing the corresponding localization errors is non-trivial at all, because it is helpful to improving localization accuracy and designing sensor network applications. This paper deals with localization errors in distance-based multi-hop localization procedures of one-dimensional sensor networks through the Cramér-Rao lower bound (CRLB). We analyze the fundamental behaviors of localization errors and show that the localization error for a sensor is locally determined by network elements within a certain range of this sensor. Moreover, we break down the analysis of localization errors in a large-scale sensor network into the analysis in small-scale sensor networks, termed unit networks, in which tight upper and lower bounds on the CRLB can be established. Finally, we investigate two practical issues: the applicability of the analysis based on the CRLB and the optimal anchor placement.     

无线传感器网络安全性研究综述

本文介绍了无线传感器网络发展现状及其应用情况,分析了无线传感网存在的安全问题及面临的安全威胁,并综合考虑无线传感网存在的自身限制,给出了保障无线传感器网络安全的综合解决方案,为无线传感器网络大范围推广应用提供了技术支撑。     

Coverage based inter cluster communication for load balancing in heterogeneous wireless sensor networks

Effective energy management in heterogeneous wireless sensor networks is more challenging issue compared to homogeneous wireless sensor networks. Much of the existing research focuses on homogeneous wireless sensor networks. The energy conservation schemes for the homogeneous wireless sensor networks do not perform efficiently when applied to heterogeneous wireless sensor networks. The proposed algorithm in this paper exploits the redundancy properties of the wireless sensor networks and also changes the inter cluster communication pattern depending on the energy condition of the high energy nodes during the life cycle of the heterogeneous wireless sensor networks. Performance studies indicate that the proposed algorithm effectively solves the problem of load balancing across the network and is more energy efficient compared to multi hop versions of the standard low energy adaptive clustering hierarchy protocol.     

无线传感器网络研究概述

集中传感器、计算机以及通信技术的无线传感器网络技术由于其良好的性能以及广阔的运用空间,得到了广大学者的关注和研究。基于此介绍了无线传感器网络的基本概念、属性,讨论了无线传感器网络的关键技术,并就使用领域进行了阐述。     

基于MIMO的节能无线传感器网络

当今无线传感器网络主要是同构网络,即网络中传感器节点结构相同,该结构不适合基于组的传感器网络.本文通过使用多天线传感器节点作为无线传感器网络中的组长节点将MIMO和SIMO方式引入组间层和组内层组员与组长之间的通讯.文中介绍了该异构网络的基本通讯机制并对其实现进行了讨论,并提出了MIMO的传感器网络功耗和延迟模型.通过模拟实验验证了该模型优于同构网络.     

一种无线传感器网络全连通群的休眠调度算法

该文针对无线传感器网络的覆盖性和连通性问题,在假设传感器节点地理位置信息已知的条件下,设计了一种包含全连通群的建立和维护以及群内节点休眠调度的全新算法。该算法采用保证群内节点彼此一跳可达的全连通群分群方法,以及分布式节能的休眠调度策略,最大程度上减少传感器网络的能量消耗,延长了网络寿命。仿真结果表明:该算法能较好地保证无线传感器网络的覆盖性和连通性,且能耗较低。     

Intrusion detection techniques in mobile ad hoc and wireless sensor networks

Mobile ad hoc networks and wireless sensor networks have promised a wide variety of applications. However, they are often deployed in potentially adverse or even hostile environments. Therefore, they cannot be readily deployed without first addressing security challenges. Intrusion detection systems provide a necessary layer of in-depth protection for wired networks. However, relatively little research has been performed about intrusion detection in the areas of mobile ad hoc networks and wireless sensor networks. In this article, first we briefly introduce mobile ad hoc networks and wireless sensor networks and their security concerns. Then, we focus on their intrusion detection capabilities. Specifically, we present the challenge of constructing intrusion detection systems for mobile ad hoc networks and wireless sensor networks, survey the existing intrusion detection techniques, and indicate important future research directions.     

无线传感器网络的建模分析

无线传感器网络由大量具有传感、计算和通讯能力的节点组成。针对不同的应用目的、工作环境和要求，提出了进行传感器网络建模需要考虑的几个要素。通过对网络基本要素的描述，能够很方便地对传感器网络进行建模。利用这些要素的特征对网络性能进行深入细致地分析以便选择或设计合适的路由协议和数据融合的方法。研究的重点是网络路由协议及其数据融合技术，也适用于其他协议的设计和建模。     

无线传感器网络的建模分析

无线传感器网络由大量具有传感、计算和通讯能力的节点组成。针对不同的应用目的、工作环境和要求,提出了进行传感器网络建模需要考虑的几个要素。通过对网络基本要素的描述,能够很方便地对传感器网络进行建模。利用这些要素的特征对网络性能进行深入细致地分析以便选择或设计合适的路由协议和数据融合的方法。研究的重点是网络路由协议及其数据融合技术,也适用于其他协议的设计和建模。     

无线传感器网络的新进展与应用

为完成实时监测、感知和采集各种监测环境或对象的信息,将智能传感器组成分布式信息测控网络。无线传感器网络是传感器智能化发展的趋势。它是以数据获取与数据管理为核心的全新网络,综合了传感器技术、嵌入式计算技术、分布式信息处理技术和无线通信技术。介绍了无线传感器网络节点、无线传感器网络、无线传感器网络的最新进展,并给出了无线传感器网络的应用。     

无线传感器网络中移动目标跟踪算法研究

由于单个传感器节点的通信、处理和感知能力有限,所以传感器节点必须协同工作才能够完成任务。本文介绍了无线传感器网络的研究现状,阐述了目前成形的无线传感器网络协议与体系结构,阐述了针对面向目标跟踪的无线传感器网络涉及到的一些关键技术,并对现有的一些无线传感器网络中移动目标协同跟踪算法以及未来的发展方向进行了论述。