无线传感器网络通信协议研究

随着计算机技术和通信技术的飞速发展,无线传感器网络也逐渐的发展起来,无线传感器网络是由很多静止的或者是动态的传感器以自组织和多跳的方式构成的无线网络,集成了传感器技术、微电子技术以及网络通信技术形成的新的信息获取和处理技术,一般多用于军事、医疗以及交通等方面。由于无线传感器网络一般都是配置在恶劣的环境,或者是无人区,并且具有脆弱性,使得网络安全引起了人们的关注。无线传感器网络通信协议还处于研究初期,需要加大对这方面的研究。本文阐述了无线传感器网络,并研究了无线传感器网络通信协议。     

无线传感器网络通信协议研究

随着我国经济建设水平的不断提高和计算机网络信息技术的推广普及，无线传感器开始在国民经济的各个领域广泛应用，其中最主要的应用就是在航空航天领域，本文从网络通信协议角度出发，结合无线传感器应用实际，对无线传感器网络通信协议进行深入的研究和探讨。     

无线传感器网络通信协议

集成了微机电系统、无线通信和现代网络等多项技术而形成的无线传感器网络是一种全新的信息获取和处理模式,其通信协议研究面临许多新的挑战.文中对各种具有代表性的协议算法性能进行了深入的比较性研究,分析指明了WSN协议设计的挑战性.     

无线传感器网络通信体系研究

无线传感器网络具有许多特点,比如分布式、功耗很小、自组织和成本很低等。传感器网络和计算机技术以及通信技术一起,并称为信息技术产业的三大支柱。文章主要从特点、组成结构以及应用等方面,简单介绍了无线传感器网络通信体系。无线传感器网络通信是一个涉及很多前沿科学的综合性技术,具有其他通信体系所不具备的优点,市场潜力很大。     

无线传感器网络分布式概率覆盖保持协议

覆盖配置能有效缓解无线传感器网络中节点能量受限的问题,但现有的研究多是基于物理覆盖,这与实际的信号传播特点不符.针对这一问题,提出了分布式传感器网络概率覆盖保持协议(DPCCP),该协议基于概率探测模型,利用Voronoi划分在节点本地执行概率覆盖判断算法.仿真实验中,将DPCCP嵌入LEACH路由协议,形成LEACHE协议,验证算法效率.仿真结果表明,DPCCP在保持网络覆盖度的同时,可关闭大量冗余节点,有效地延长了网络寿命.     

无线传感器网络MAC协议研究进展

无线传感器网络是一种全新的计算模式,是继因特网之后将对21世纪人类生活方式产生重大影响的IT热点技术,媒体介质访问控制(MAC)协议的研究成为无线传感器网络研究中的热点。介绍了无线传感器网络MAC协议的设计性能指标,无线传感器网络中的节能相关问题,然后对现有的无线传感器网络MAC协议按照其实现方法的特点进行了分类,并分析了每个类型中的典型协议的优缺点,最后展望了无线传感器网络MAC协议未来的研究方向。     

无线传感器网络分布式频谱检测研究

传统单节点频谱检测由于受到阴影效应、多径效应和隐藏终端问题的影响，使得检测性能受到影响。基于无线传感器网络的分布式频谱检测技术能有效克服这一缺陷。在简要分析频谱检测技术的特点和要求的基础上，讨论了基于无线传感器网络的分布式频谱检测系统的结构，从本地检测和融合算法两个角度，对现有的几种基于无线传感器网络的分布式频谱检测方法进行了综述，并对其发展方向给出了建议。     

分布式虚拟环境中网络通信软件的设计及其实现

网络通信是分布式虚拟环境设计中的重要技术，本文介绍了网络通信软件的设计思想、总体结构及其实现的关键技术。     

基于分簇的无线传感器网络通信协议LEACH研究

针对于直接传输（DT,DirectTransmission）和最小化传输能量（MTE,MinimumTransmissionEnergy）两种传统通信协议的缺点和无线传感器网络（WSNs,WirelessSensorNetworks）的特点,分析了基于分簇的无线传感器网络通信的低功耗自适应分簇协议（LEACH,Low—EnergyAdaptiveCluste—ringHierarchy）的基本原理,并对三者进行仿真分析。分析与仿真结果表明,使用LEACH协议比使用DT协议要节约大约7到8倍的能源,同时也比MTE协议方式要减少4到8倍能源消耗。更适用于无线传感器网络。     

无线传感器网络分布式一致时间同步协议的收敛分析及加速设计

该文研究了基于分布式一致的无线传感器网络时间同步协议的收敛和加速问题。通过将其同步迭代过程映射到马尔可夫链的状态转移过程,推导出了分布式一致时间同步协议在循环网中的收敛速度与节点邻居数和网络规模有关。Matlab仿真实验表明该结论对类均匀规则网和类均匀网也是正确的。此外,对于类均匀网,邻居数分布也会影响协议的收敛速度。因此该文提出了基于改变网络邻居数分布的加速算法来提高分布式一致时间同步协议的收敛速度。规模为100个节点的类均匀网络实验结果表明,该文提出的加速算法在没有显著改变节点平均传输半径的情况下可使分布式一致时间同步协议的收敛迭代次数降低约25%。     

An efficient anonymous communication protocol for wireless sensor networks

Anonymous communication is very important for many wireless sensor networks, because it can be used to hide the identity of important nodes, such as the base station and a source node. In sensor networks, anonymous communication includes several important aspects, such as source anonymity, communication relationship anonymity, and base station anonymity. Existing sensor network anonymous schemes either cannot achieve all the anonymities or have large computation, storage, and communication overheads. In this paper, we propose an efficient anonymous communication protocol for sensor networks that can achieve all the anonymities while having small overheads on computation, storage, and communication. We compare our anonymous communication protocol with several existing schemes, and the results show that our protocol provides strong anonymity protection and has low overheads. Copyright © 2011 John Wiley & Sons, Ltd.     

An efficient distributed routing protocol for wireless sensor networks with mobile sinks

Introducing mobile sinks into a wireless sensor network can effectively improve the network performance. However, sink mobility can bring excessive protocol overhead for route maintenance and may offset the benefit from using mobile sinks. In this paper, we propose a dynamic layered routing protocol to address this problem. The proposed protocol integrates dynamic layered Voronoi scoping and dynamic anchor selection to effectively reduce the dissemination scopes and frequencies of routing updates as the sinks move in the network. Simulation results show that the proposed protocol can effectively reduce the protocol overhead while ensuring high packet delivery ratio as compared with existing work. Copyright © 2014 John Wiley & Sons, Ltd.     

UW‐MAC: An underwater sensor network MAC protocol

As over 70% of the earth's surface is covered by water, it is desirable to deploy underwater sensor networks (UWSNs) to support oceanic research. UWSNs use acoustic waves and are characterized by long and variable propagation delays, intermittent connectivity, limited bandwidth and low bit rates. Energy savings have always been the primary concern in wireless sensor network protocols; however, there are applications where the latency and throughput are prioritized over energy efficiency and are so significant that the application would not be able to satisfy its requirements without them. Although existing duty‐cycle MAC protocols are power efficient, they introduce significant end‐to‐end delivery latency, provide poor throughput and are not suitable for the challenging environment of a UWSN. In this paper, we utilize CDMA as the underlying multiple access technique, due to its resilience to multi‐path and Doppler's effects prevalent in underwater environments. We propose UW‐MAC, a CDMA‐based power‐controlled medium access protocol that uses both transmitter‐based and receiver‐based CDMA inside a formed cluster, and uses a TDMA schedule to make the cluster heads communicate with the base station. Our MAC algorithm targets the latency and throughput needs in addition to its ability to increase the overall network lifetime. We discuss the design of UW‐MAC, and provide a head‐to‐head comparison with other protocols through extensive simulations focusing on the performance in terms of latency, throughput, and energy consumption. Copyright © 2009 John Wiley & Sons, Ltd.     

一种用于波长路由光网络的分布式快速波长预留协议

波长预留协议用于在光通道建立过程中预留和配置波长.目前已有的波长预留协议都把协议设计的目标定为降低网络阻塞率,没有一种协议设计把目标定为缩短光通道的建立时间和简化协议处理过程.然而更短的建立时间和更小的协议复杂度对于未来极其动态的光网络却是非常重要的.提出了一种新颖的用于波长路由光网络的分布式快速波长预留协议-目的端预留协议,它在保证网络阻塞率可以接受的前提下,不仅可以降低连接建立时间,还可以减少控制节点处理器需要处理的信令消息数量.仿真结果证明了这一点.     

水下无线传感器网络DBR路由协议研究

DBR(Depth Based Routing)协议是水下无线传感器网络中第一个基于深度信息的路由协议。分析了水下无线传感器网络中DBR路由协议特性,详细阐述了DBR协议中的网络拓扑结构、数据转发机制及其存在的一些问题。并简单介绍了目前有关DBR的改进路由协议。     

Power-One通信电源监控系统通信协议破解

根据数据链路层通信协议的一般格式,对串口监听工具截取的Power One通信电源监控系统的通信信息进行了逻辑推理和分析,破解了其通信协议的格式和各种通信命令.实际验证表明,破解结果正确无误.研究结果对于我国通信电源分布式监控系统通信协议的设计和实现,具有一定的借鉴意义.     

无线传感器网络协议探究

随着物联网技术的深入发展,无线传感器网络的应用也越来越广泛.然而,无线传感器网络的技术还有待进一步的发展,也促使人们对于无线传感器网络协议的深入探究.本文针对无线传感器网络协议的网络层协议和MAC层协议的分类做了详细的描述和总结,为后续人们进一步研究做好铺垫.     

Lightweight distributed geographical: a lightweight distributed protocol for virtual clustering in geographical forwarding cognitive radio sensor networks

Recent literature characterizes future wireless sensor networks (WSN) with dynamic spectrum capabilities. When cognitive radio is introduced as a main component of a network, a network management protocol is needed to ensure network connectivity and stability especially in highly dynamic environments. Implementing such protocols in WSN opens more challenges because of the resource constraints in sensor networks. We propose a distributed lightweight solution that fulfills this need for WSN. With this protocol, a node in a multichannel environment is quickly able to establish a control channel with neighboring nodes. Lightweight distributed geographical either increases or reduces the coverage area of the control channel based on perceived interference and adequately takes care of intersecting nodes with minimal overhead. By identifying local minima nodes, it also has the potentiality of reducing route failure by 70% further reducing the time and energy overhead incurred by switching to angle routing or maximum power transmission schemes usually used to solve the local minima issue. The work shows best operating values in terms of duty cycle and signal to noise ratio threshold frequencies and the lightweight nature of lightweight distributed geographical in terms of energy and communication overhead, which suits network management protocols for cognitive radio sensor networks. Copyright © 2013 John Wiley & Sons, Ltd.     

Density‐adaptive network reprogramming protocol for wireless sensor networks

Network reprogramming is a process used to update program codes of sensor nodes that are already deployed. To deal with potentially unstable link conditions of wireless sensor networks, the epidemic approach based on 3‐way advertise‐request‐data handshaking is preferred for network reprogramming. Existing epidemic protocols, however, require a long completion period and high traffic overhead in high‐density networks, mainly due to the hidden terminal problem. In this paper, we address this problem by dynamically adjusting the frequency of advertisement messages in terms of the density of sensor nodes, which is the number of sensor nodes in a certain area. We compare the performance of the proposed scheme, called DANP (Density‐Adaptive Network Reprogramming Protocol), with a well‐known epidemic protocol, Deluge. Simulations indicate that, in the grid topologies, DANP outperforms Deluge by about 30% in terms of the completion time and about 50% in terms of the traffic overhead. Significant performance gain is observed in random topologies as well. The performance of DANP is further confirmed via measurements in an experimental test bed. Copyright © 2009 John Wiley & Sons, Ltd.     

分布式传感器网络混合探测信号分类方法

针对分布式传感器网络的局限性特征,研究分布式传感器网络混合探测信号的分类算法。提出了基于属性重要度的贝叶斯分类算法,该算法继承了朴素贝叶斯分类算法结构简单、运算快捷的特点,同时弥补了类条件独立假设带来的缺陷,在实践中具有较高的分类精度,其特点符合混合探测信号的分类要求。实验结果表明,该算法分类效果优于同类分类算法,可以有效地完成混合探测信号的分类任务。