无线传感器网络的路由协议分析

无线传感器网络是由大量微型传感器节点组成的一个自组织的网络系统,路由协议是其关键技术之一.现有的路由协议分为:能量感知路由协议、以数据为中心的路由协议、基于地理位置的路由协议、可靠的路由协议和层次路由协议五类,对每类协议的特点和比较典型的协议进行了介绍.     

无线传感器网络路由协议与改进

详细介绍无线传感器网络(WSN)的两种代表性协议:信息协商传感器(SPIN)协议和低能量自适应分簇路由(LEACH)协议的概念、原理和优缺点.提出路由协议中需要进一步解决的问题.改进的WSN路由算法应尽可能降低节点能耗.以延长网络生存时间.     

无线传感器网络路由协议与改进

详细介绍无线传感器网（WSN）两种代表性协议：信息协商传感器（SPIN）协议和低能量自适应分簇路由（LEACH）协议的概念、原理和优缺点。提出路由协议中需要进一步解决的问题。改进的WSN路由算法应尽可能降低节点能耗,以延长网络生存时间。     

Hierarchical routing protocols for wireless sensor network: a compressive survey

Wireless Networks - Wireless sensor networks (WSNs) are one of the key enabling technologies for the internet of things (IoT). WSNs play a major role in data communications in applications such as...     

基于节能策略的无线传感器网络MAC协议

由于无线传感器网络的特殊性,针对其节能问题的媒体访问控制(MAC)协议研究越来越受到人们的关注.首先分析了无线传感器网络中能源损耗的原因,接着对近年来典型的基于节能策略的无线传感器网络MAC协议进行了分析总结,并综合其它性能指标比较了协议性能,最后提出了一些未来的研究方向.     

无线传感器网络安全技术及应用实践探微

随着科技的不断进步,无线传感器网络技术得到了极大的推广和应用,并且给人们的生活和工作带来了极大的便利。在应用的过程,要对无线传感器网络安全技术加以研究和探索,从而防止泄漏军事或科技上的重要信息,进而避免发生不可挽回的重大损失。文章对无线传感器网络安全技术及应用实践进行了探索和分析,对其自身存在的安全隐患或者由于外界因素影响下产生的安全问题作了详细的阐述,并对几类具体的安全技术及其策略作了详细的分析和阐述。     

公路边坡监测无线传感器网络分簇路由协议分析

针对现有公路边坡监测手段成本高、线路维护困难和实时性差等问题,在介绍了无线传感器网络技术的特点之后,提出了一种基于无线传感器网络的公路边坡监测系统方案,并在此方案的基础上,结合公路边坡监测的实际应用环境,对无线传感器网络中的四种分簇路由协议进行了详细分析,最后主要从节能性、扩展性和适用环境3个方面总结了这4种路由协议各自的优缺点.     

MAC protocols for wireless sensor networks: a survey

Wireless sensor networks are appealing to researchers due to their wide range of application potential in areas such as target detection and tracking, environmental monitoring, industrial process monitoring, and tactical systems. However, low sensing ranges result in dense networks and thus it becomes necessary to achieve an efficient medium-access protocol subject to power constraints. Various medium-access control (MAC) protocols with different objectives have been proposed for wireless sensor networks. In this article, we first outline the sensor network properties that are crucial for the design of MAC layer protocols. Then, we describe several MAC protocols proposed for sensor networks, emphasizing their strengths and weaknesses. Finally, we point out open research issues with regard to MAC layer design.     

无线传感器MAC层协议的研究

作为信号处理、通信和传感器三项技术结合的产物，无线传感器网络具有许多方面的应用，像在环境保护、领土安全和未来数字化战争等中。近年来对无线传感器的介质访问控制（Media Access Control，MAC）层协议研究也越来越多。在详细介绍了一些典型的协议基础上分析了协议的优缺点，以便无线传感器网络MAC层协议的近一步研究和改进。     

On certificate-based security protocols for wireless mobilecommunication systems

Mutual authentication and session key exchange protocols based on certificates for the wireless mobile communication/computing system are proposed. First, two improved versions for the conventional certificate-based systems are proposed, and an offline authentication mechanism based on the dynamic certificate is introduced. Then, an end-to-end internetwork-authenticated session key exchange protocol, which preserves a private communication between two mobile users, is finally proposed. In designing the security protocols proposed, the low computational power of the mobile stations and the low bandwidth of the wireless networks are considered     

低功耗无线传感器网络

全球对＂绿色＂科技和能源使用效率的需求推动着新一代超低功耗无线网络的发展。这种新一代网络正在不断发展以用于工业和控制应用中基于传感器的远程系统;此外,它也促使更多应用更好地使用无须任何网络电缆或电源线的真正无线解决方案。     

无线传感网络在工业控制中应用的安全问题研究

无线传感器网络的安全问题已经受到广泛关注,特别在其进入工业控制领域及军用领域后,但典型的传感器节点设计受计算能力、存储能力及无线链路的频带宽度限制,这些限制导致无法设计更为完善及复杂的安全策略。工业用传感器很多情况下可使用有源电力供电或太阳能供电,所以传感器设计上一般具有较强的计算能力及电池续航能力,在针对无线传感器网络的攻击行为中只有部分会对其网络产生巨大影响,微型传感器所存在的一些针对能量或计算能力的攻击模式基本无法有效影响工业上使用的传感器。本文针对这些特点分析了一些热点研究的安全技术,并探讨了工业用无线传感器网络安全的进一步研究方向。     

Localized network layer protocols in wireless sensor networks based on optimizing cost over progress ratio

We present a simple framework for designing network layer protocols for sensor networks including localized routing, broadcasting, area coverage, and so on. The framework is general enough and is applicable to a variety of problems, network assumptions, and optimality criteria. Our simple framework is based on optimizing the ratio of the cost of making certain decisions (e.g., selecting a forwarding neighbor for routing) to the progress made in doing so (e.g., reduction in distance to destination). We show how to apply this general guideline for the design of hop count, power awareness, maximal lifetime, beaconless and physical-layer-based routing, minimal energy broadcasting, sensor area coverage, and multicasting protocols. Moreover, we show that in the case of routing, the best known strictly localized position-based techniques are, in almost all cases, special cases of the described general cost-to-progress ratio paradigm.     

无线网络安全问题探讨

具有移动性、开放性和灵活性等特点的无线网络快速发展与普及,为人们日常工作、学习和生活提供了前所未有的便利,同时也因为无线网络自身的特点,面临着严峻的安全问题挑战.本文重点研究无线网络中最常见的无线局域网的安全问题,通过分析无线网络的安全威胁,探讨无线局域网的安全问题防范技术及措施.     

无线安全技术的发展

无线技术的发展使得无线网络越来越走进人们的生活,但同时也对无线安全技术提出了更严格的要求。系统地讨论了无线安全技术的发展,指出了传统无线局域网安全防御措施的弊端,介绍了新一代加密认证方法以及VPN技术,同时提出了一些新技术解决方案的实现过程。     

基于无线传感器网络的煤矿安全监测系统的研究与设计

提出了应用于矿井安全监测和人员定位的无线传感器网络解决方案,以取代传统矿井安全监测系统的总线式数据传输和RFID定位,具有节点布置简易,方便移动,不易损坏,定位精度高以及成本低廉等优势。测试结果表明．基于CC2430的无线传感器网络解决方案和基于RSSI测距的改进APIT定位算法,完全满足矿井安全监测和人员定位的要求。     

A survey on routing protocols for wireless sensor networks

Recent advances in wireless sensor networks have led to many new protocols specifically designed for sensor networks where energy awareness is an essential consideration. Most of the attention, however, has been given to the routing protocols since they might differ depending on the application and network architecture. This paper surveys recent routing protocols for sensor networks and presents a classification for the various approaches pursued. The three main categories explored in this paper are data-centric, hierarchical and location-based. Each routing protocol is described and discussed under the appropriate category. Moreover, protocols using contemporary methodologies such as network flow and quality of service modeling are also discussed. The paper concludes with open research issues.     

A survey of transport protocols for wireless sensor networks

In this article we present a survey of transport protocols for wireless sensor networks (WSNs). We first highlight several unique aspects of WSNs, and describe the basic design criteria and challenges of transport protocols, including energy-efficiency, quality of service, reliability, and congestion control. We then provide a summary and comparison of existing transport protocols for WSNs. Finally, we discuss several open research problems.     

On composability of localization protocols for wireless sensor networks

Realistic, complex outdoor environments pose significant challenges for node localization in wireless sensor networks. In spite of the fact that many elegant and clever solutions have been proposed, no robust localization system has emerged. This status quo is because existing solutions work well for single sets of assumptions that, however, do not always hold in complex environments. In this article we review the state of the art for node localization in wireless sensor networks and show how localization protocol composability has the potential to provide the robust solution that is needed. By composing localization protocols in a hierarchy and allowing the execution of multiple localization schemes, robust solutions against any single protocol failure can be built.     

无线传感器网络MAC层协议的对比研究

无线传感器网络是二十一世纪新兴的网络技术，它的出现使网络的发展进入一个新的阶段。针对无线传感器网络MAC层协议的研究一直是人们普遍关注的问题。总结了近年来的研究成果并针对TDMA，IEEE802．15．4，S—MAC，T—MAC几种典型的MAC层协议进行了对比分析，根据其各自的优点提出将来工作的方向和建议。