无线传感器网络S-MAC协议的能耗改进

无线传感器节点由于能量的耗尽而失效或者废弃,造成相应监测区域的空白,能耗问题一直是传感器网络介质访问控制（MAC）协议研究的重点问题之一。在S-MAC协议采用周期性侦听和睡眠机制、自适应侦听机制等方式改善网络能耗的基础上提出选择性睡眠、动态调整占空比、发送功率控制三种改进方法。通过NS2仿真实验,改进后S-MAC协议的能耗明显得到优化。     

An Analysis of Energy Efficiency Improvement Through Wireless Energy Transfer in Wireless Sensor Network

In a wireless sensor network, wireless Energy transfer is a demanding technology for the energy difficulties in recent times. The foremost disadvantage of presentation is limited duration because WSN contains only restricted battery energy at a node. Therefore, we anticipated cluster-related wireless energy transfer in this document. The foremost intention of the method is to augment the duration of the sensor network through charging by the help of this wireless power transfer technology. So that, mobile charging vehicle (MCV) is established to move within the network and charge the sensor node battery wireless. The sensor nodes in the network are collected as a cluster for energy efficiency. Here, the cluster head is chosen for each one cluster in the network which is based on the rank metric value. Suppose, if one node in the network is reducing its energy, then the CH will send charge request and route ID to the MCV. Afterward, the MCV recognize the node by means of the exacting route and establish to charge the node. The reproduction consequences illustrate that the network lifetime of our anticipated method is enhanced than obtainable method.

     

无线传感器网络能耗分析与节能策略研究

能量供应与消耗目前影响无线传感器网络生存时间的主要因素。介绍了无线传感器网络节点组成,从硬件消耗和软件消耗两方面分析了影响能量消耗的主要因素,阐述了降低能耗、延长网络生存时间的的5种基本策略,并对无线传感器网络的能量供应方式的发展作了分析预测。     

无线躯体传感器网络中低能耗的时间同步算法

时间同步是无线躯体传感器网络(WBSN)的一项支撑技术.文章针对WBSN能源有限的问题,提出了一种改进的时间同步算法.该算法结合基准节点单向广播机制和成对双向消息传递机制,在保证一定同步精度的前提下,减少消息传递次数,降低通信开销,达到了低能耗的要求.最后进行仿真验证了算法性能.     

无线传感器网络能耗分析与策略研究

无线传感器网络技术得到了广泛应用,但是该技术一直受能量的制约,因此能量始终是无线传感器网络的核心问题。通过对传感器节点结构与网络体系的分析,得出了传感器网络的能耗特性。为了延长无线传感器网络的生命周期,对传感器节点工作能耗与传感网络能耗做了具体研究,再从低功耗节点设计、网络协议及环境中能量补给三个方面总结出了一套有效的节能策略。     

Effective Energy Adaptive and Consumption in Wireless Sensor Network Using Distributed Source Coding and Sampling Techniques

Multimedia is the process of handling multiple medium of messages over network with high rate data services in wireless cellular area networks. Communication is the process of exchanging information form one service to another. In wireless networks are significantly growth of affecting network performance and energy consumption. The major problem is end to end delay in each node and meets the quality of services. The followings are considered for implementing wireless sensor network such as reduces the network delay, propagation delay and energy consumption. The senor node can sense the encoding value and reduce the network traffic delay using mitigation method. This paper propose a unique approach to provide simple routing services with reduced traffic delay, end to end delay network performance and to achieve better performance using Distributed Source Coding and Effective Energy Consumption methods. In this paper we use optimal early detection algorithm for improving network performance and energy consumption problem. An iterative Shannon fano and Tuker method is used for finding optimal solution of each node values. Network Simulator-3 is used for simulating network environments and setup the experiments. Our proposed method shows high data rate, good performance and low energy consumptions. The results compare with existing methodologies and performance is good.

     

基于5G通信技术的无线网络节能降耗技术研究

近年来,可持续发展和绿色发展越来越受到能源消耗型企业的重视。通信产业作为关乎民生的重要产业,各大运营商的经营规模和利润产出极为可观,但其作为资源消耗性企业,在能耗和碳排放方面的规模也无法忽视。通信产业现有的节能减排策略以减少基站环境控制设备的功耗为主,缺少完善的基于基站设备的能耗控制技术。文中结合实际情况,简要叙述了各种技术在无线网络的节能降耗方面的作用。     

无线传感器网络关键节能技术及节能策略研究

无线传感器网络（WSN,Wireless Sensor Network）是一种由传感器、数据处理单元和通信模块集成的微小节点通过自组织方式构成的网络,其节点通常采用无法替换的电池供电,有限的能量使得节能问题成为无线传感器网络的研究重点方向。本文介绍了传感器的能耗情况,结合已有研究重点分析了关键节能技术及节能策略,并指出了研究方向。     

无线传感器网络中一种能量有效的簇内通信方案

为了提高簇内通信的能耗均衡性,提出了一种能量有效的分簇无线传感器网络簇内空分通信方案——近簇头节点采用单跳传输,远簇头节点多跳传输,给出了空分通信方案的工程实现。仿真结果验证了空分混合通信方案在能量有效性和能耗均衡分配方面的优势。     

无线传感器网络关键节能技术及节能策略研究

无线传感器网络(WSN,Wireless Sensor Network)是一种由传感器、数据处理单元和通信模块集成的微小节点通过自组织方式构成的网络,其节点通常采用无法替换的电池供电,有限的能量使得节能问题成为无线传感器网络的研究重点方向.本文介绍了传感器的能耗情况,结合已有研究重点分析了关键节能技术及节能策略,并指出了研究方向.     

On Balancing Energy Consumption in Wireless Sensor Networks

Wireless sensor networks (WSNs) require protocols that make judicious use of the limited energy capacity of the sensor nodes. In this paper, the potential performance improvement gained by balancing the traffic throughout the WSN is investigated. We show that sending the traffic generated by each sensor node through multiple paths, instead of a single path, allows significant energy conservation. A new analytical model for load-balanced systems is complemented by simulation to quantitatively evaluate the benefits of the proposed load-balancing technique. Specifically, we derive the set of paths to be used by each sensor node and the associated weights (i.e., the proportion of utilization) that maximize the network lifetime.      

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.     

无线传感网络安全改进方案研究

介绍了无线传感网络的发展现状和网络应用的特点,详细描述了时变加密技术的工作原理和在无线传感网络中的应用。针对时变加密密钥在无线传感网络中容易出现丢失和误码,从而导致网络中的感应节点与控制节点安全数据传输失效的缺点,提出了密钥预传输的解决方案。该方法在不缩短节点寿命的前提下,大大提高了无线传感网络的安全性和节点数据传输的稳定性。     

Energy Efficient Clustering Algorithm Using RFD Based Multi-hop Communication in Wireless Sensor Networks

In recent years, researchers have focused on many challenging aspects in the area of Wireless Sensor networks (WSNs). Development of energy efficient data collection protocols became the major concern in WSN. Clustering is one of the suitable techniques for energy efficiency. However, in clustering, the cluster are formed with uneven size. This unbalances the energy consumption among clusters which in turn reduce the lifetime of the network. In this paper, in order to balance the energy among clusters, a multi-hop concept is introduced for both intra and inter cluster communication. Firstly, the RFDMRP: River Formation Dynamics based Multi-hop Routing Protocol has been proposed. Later, this protocol is integrated with clustering and a new hybrid technique, named as hybrid clustering communication algorithm using RFDMRP (HCCRFD) is introduced. HCCRFD improves energy conservation by reducing overall packet transmission distance of intra and inter cluster communication, which results in increased network lifetime. Energy consumption of proposed algorithm has been analyzed mathematically. Also, the algorithms were simulated using MATLAB and outputs observed. The observed outputs were compared with existing protocols such as LEACH, DEEC, ERA, and \(ACH^2\) in three different scenarios namely homogenous, heterogeneous environment, and node density. The comparison reveals that the proposed algorithm perform better than the existing protocols with respect to energy conservation and network lifetime.     

协同通信在无线传感网中的应用

差错性能、吞吐量一直是无线通信追求的关键参数,协同通信可以在终端不安装多天线的基础上获得近似MI-MO(Multiple Input Multiple Output)技术的协同分集增益,提高系统性能或吞吐量。能效性是无线传感网中的关键参数,将协同通信应用在基于分簇的无线传感器网络(WSN)中,可以提高整个网络的能效性,以达到节省能量、延长整个网络寿命的目标。介绍了协同通信在无线传感器网络的结合应用方案,对这种结合的能效性能的最新研究给出了分析介绍,最后总结了研究的关键问题以及未来的发展趋势和研究方向。     

基于节能目标的无线传感网络MAC协议

针对多用户共享未授权频段背景下无线传感网络节点节能问题,结合IEEE802.15.4标准,提出了一种改进的 MAC 协议,用在 CTS 包中设置阈值的方法,将数据传输路径分段,段内节点通信采用Mao-heng Sun等提出的握手方式,段间相邻节点通信采用IEEE802.11握手方式.阈值可根据先验知识设定,从而调整分段长度,以适应不同的应用场景.仿真试验证明了该方法降低节点能耗的有效性.     

Network Energy Optimization of IOTs in Wireless Sensor Networks Using Capsule Neural Network Learning Model

Wireless Personal Communications - In this paper, an effective network energy optimization is carried out for the internet of things (IoTs) sensor nodes in respect of the wireless sensor networks....     

Wireless Body Area Sensor Network Authentication Using Voronoi Diagram of Retinal Vascular Pattern

This paper focuses on the problem of human authentication in Body Area Sensor Network using retina. In this proposed method, Voronoi Diagram (VD), a well known technique in computational geometry, is generated from the topological structure of the bifurcation points, considered as vertices, obtained from the blood vessels found in the retina which can further be used in the process of identification and verification. Since the structure formed by bifurcation points is unique in every retina, hence the calculated VD is also unique and provides the foundation of developing the system of retina based identification. The approach presented in this paper rejects any non-similar retina instantly while maintaining excellent accuracy and performance. Another advantage of using this approach is that it does not require the localization of Optic Disc and the Fovea, which most of the existing algorithms have required, and, experimental results proved that VD is efficient in template matching and storage requirements. Additionally, our proposed algorithm is invariant against any geometric transformation (i.e. scaling, translation and rotation).     

面向能耗控制的无线传感器网络节点协议优化

能量受限是无线传感器网络一个显著的特征。对网络进行能耗优化并延长网络生命周期是无线传感器网络研究的重点。提出了面向能耗控制的无线传感器网络节点协议优化方法。针对网络中数据发送所占较大的能耗比重,通过对协议优化,对发送功率的参数设置方法进行改进,改变以往发射功率的固定参数设置法,通过终端节点之间的距离动态调整发送功率的方法,以达到节省能耗并延长网络生命周期的目的。仿真和实验结果表明,改进后的发射功率动态参数设置法较改进之前的固定参数设置方法能更多地节约网络能耗。