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2013 IEEE International Workshop on Measurements & Networking (M&N)最新文献

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Channel coding and interleaving in Industrial WSN: abiding to timing constraints and bit error nature
Pub Date : 2013-11-14 DOI: 10.1109/IWMN.2013.6663775
Filip Barac, M. Gidlund, Tingting Zhang
Forward Error Correction is a preemptive manner of improving communication reliability. Albeit not a part of IEEE 802.15.4-2006 standard, its application in Industrial Wireless Sensor Networks has been widely considered. Nevertheless, this study is the first performance analysis on real error traces with sufficiently lightweight channel codes, with respect to IEEE 802.15.4-2006 and industrial wireless communication timing constraints. Based on these constraints and bit error properties from the collected traces, the use of Reed-Solomon (15,7) block code is suggested, which can be implemented in software. Experiments show that bit error nature on links affected by multipath fading and attenuation in industrial environments is such that RS(15,7) can correct ≥95% of erroneously received packets, without the necessity for interleaving. On links under IEEE 802.11 interference, typically up to 50% of corrupted packets can be recovered by combining RS(15,7) with symbol interleaving, which has proven to be more effective than its bit counterpart. The optimal interleaving depth is found empirically and it is shown that simple bit-interleaved 1/3 repetition code achieves at least 90% of correcting performance of RS(15,7) code on uninterfered links that operate ≥10 dB above the sensitivity threshold.
前向纠错是一种提高通信可靠性的先发制人的方式。虽然它不是IEEE 802.15.4-2006标准的一部分,但它在工业无线传感器网络中的应用已经得到了广泛的考虑。尽管如此,这项研究是第一次在IEEE 802.15.4-2006和工业无线通信时序约束下,对足够轻量的信道代码进行实际错误跟踪的性能分析。基于这些约束条件和采集到的迹线的误码特性,建议使用Reed-Solomon(15,7)分组码,该分组码可以在软件中实现。实验表明,在工业环境中受多径衰落和衰减影响的链路上,RS(15,7)可以纠正≥95%的错误接收数据包,而无需交叉。在IEEE 802.11干扰下的链路上,通常高达50%的损坏数据包可以通过将RS(15,7)与符号交错相结合来恢复,这已被证明比其对应的位更有效。经验发现了最佳交错深度,结果表明,在灵敏度阈值以上≥10 dB的无干扰链路上,简单的位交错1/3重复码的校正性能至少达到RS(15,7)码的90%。
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引用次数: 8
Duplicate detection methodology for IP network traffic analysis IP网络流量分析的重复检测方法
Pub Date : 2013-11-14 DOI: 10.1109/IWMN.2013.6663796
Iñaki Ucar, D. Morató, E. Magaña, M. Izal
Network traffic monitoring systems have to deal with a challenging problem: the traffic capturing process almost invariably produces duplicate packets. In spite of this, and in contrast with other fields, there is no scientific literature addressing it. This paper establishes the theoretical background concerning data duplication in network traffic analysis: generating mechanisms, types of duplicates and their characteristics are described. On this basis, a duplicate detection and removal methodology is proposed. Moreover, an analytical and experimental study is presented, whose results provide a dimensioning rule for this methodology.
网络流量监控系统必须处理一个具有挑战性的问题:流量捕获过程几乎总是产生重复的数据包。尽管如此,与其他领域相比,没有科学文献涉及它。本文建立了网络流量分析中数据重复的理论背景,阐述了重复的产生机制、重复的类型及其特点。在此基础上,提出了一种重复检测和去除方法。此外,还提出了一项分析和实验研究,其结果为该方法提供了量纲规则。
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引用次数: 8
Supervised wearable wireless system for fall detection 监督可穿戴无线跌倒检测系统
Pub Date : 2013-11-14 DOI: 10.1109/IWMN.2013.6663803
A. Leone, G. Rescio, P. Siciliano
Falling down events can cause trauma, disability and death among older people. Accelerometer-based devices are able to detect falls in controlled environments. This kind of solution often presents poor performance in real conditions. The aim of this work is the development of a computationally low-cost algorithm for feature extraction and the implementation of a Machine Learning scheme for people fall detection, by using a tri-axial MEMS wearable wireless accelerometer. The proposed approach allows to generalize the detection of fall events in several practical conditions. It appears invariant to the age, weight, height of people and to the relative positioning area (even in the upper part of the waist), overcoming the drawbacks of well-known threshold-based approaches in which several parameters need to be manually estimated according to the specific features of the end-user. In order to limit the workload, the specific study on posture analysis has been avoided and a polynomial kernel function is used while maintaining high performance in terms of specificity and sensitivity. The supervised clustering step is achieved by implementing an One-Class Support Vector Machine classifier in a stand-alone PC.
跌倒事件会给老年人造成创伤、残疾和死亡。基于加速度计的设备能够在受控环境中检测跌倒。这种解决方案在实际情况下往往表现出较差的性能。这项工作的目的是通过使用三轴MEMS可穿戴无线加速度计,开发一种用于特征提取的计算成本低的算法,并实现用于人体跌倒检测的机器学习方案。所提出的方法可以在几种实际条件下推广对坠落事件的检测。它对人的年龄、体重、身高和相对定位区域(甚至在腰部上部)都是不变的,克服了众所周知的基于阈值的方法需要根据最终用户的具体特征手动估计几个参数的缺点。为了减少工作量,避免了对姿态分析的具体研究,在保持高性能的特异性和灵敏度的同时,使用多项式核函数。监督聚类步骤是通过在一台独立的PC机上实现一个单类支持向量机分类器来实现的。
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引用次数: 4
VoIP performance evaluation over IPv4-6 and manually configured tunnels 基于IPv4-6和手动配置隧道的VoIP性能评估
Pub Date : 2013-11-14 DOI: 10.1109/IWMN.2013.6663789
Poussy A. Amr, Nashwa Abdelbaki
IPv4 address space is exhausted. Internet Engineering Task Force (IETF) developed IPv6 -the upgrade of IPv4- to satisfy the continual increase of the IP address needs. The Internet is so ramified and enormous that the complete transition from IPv4 to IPv6 is slow. Therefore, their coexistence is inevitable. Manually configured tunnels are an important solution to allow this co-existence that allows transmitting native IPv6 packets over IPv4 networks. Meanwhile, VoIP is also gaining momentum with expectation to occupy considerable percentage of Internet traffic. In this paper, we compare the Voice over Internet Protocol (VoIP) network performance delivering Real-Time Quality-of-Service over manually configured tunnels versus conventional IPv4 and IPv6 networks. The measurements are collected out of probing a single call transferred over a network congested with HTTP, FTP or Video. The comparison performance criteria are jitter, network delay, throughput and packet loss percentage. Also the call user satisfaction is assessed by Mean Opinion Score.
IPv4地址空间耗尽。处理步骤Internet Engineering Task Force (IETF)开发了IPv4的升级版IPv6,以满足不断增长的IP地址需求。互联网是如此分散和庞大,从IPv4到IPv6的完全过渡是缓慢的。因此,两者共存是不可避免的。手动配置隧道是允许这种共存的重要解决方案,允许在IPv4网络上传输本地IPv6数据包。与此同时,VoIP也在获得动力,预计将占据相当大比例的互联网流量。在本文中,我们比较了通过手动配置隧道提供实时服务质量的互联网协议语音(VoIP)网络性能与传统的IPv4和IPv6网络。这些测量是通过探测通过HTTP、FTP或视频拥塞的网络传输的单个呼叫来收集的。比较性能标准是抖动、网络延迟、吞吐量和丢包率。此外,呼叫用户满意度的评估是平均意见得分。
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引用次数: 2
Quality assessment of VoIP services: A proposal based on the measurement of the IP Packet Delay Variation VoIP服务的质量评估:基于IP分组延迟变化测量的建议
Pub Date : 2013-11-14 DOI: 10.1109/IWMN.2013.6663787
L. Angrisani, D. Capriglione, L. Ferrigno, G. Miele
Generally, the voice quality of a VoIP call can be analyzed through the measurement of suitable metrics at the application layer of the International Organization for Standardization/Open Systems Interconnection (ISO/OSI) protocol stack. However, the peculiarities of such a kind of measurements make very difficult to provide to each user a value representative of the quality of each VoIP call.
一般来说,可以通过在国际标准化组织/开放系统互连(ISO/OSI)协议栈的应用层测量合适的指标来分析VoIP呼叫的语音质量。然而,这种测量的特殊性使得很难向每个用户提供代表每个VoIP呼叫质量的值。
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引用次数: 5
A real time unsupervised NIDS for detecting unknown and encrypted network attacks in high speed network 一种用于高速网络中检测未知和加密网络攻击的实时无监督网络入侵检测系统
Pub Date : 2013-11-14 DOI: 10.1109/IWMN.2013.6663794
P. V. Amoli, T. Hämäläinen
Previously, Network Intrusion Detection Systems (NIDS) detected intrusions by comparing the behaviour of the network to the pre-defined rules or pre-observed network traffic, which was expensive in terms of both cost and time. Unsupervised machine learning techniques have overcome these issues and can detect unknown and complex attacks within normal or encrypted communication without any prior knowledge. NIDS monitors bytes, packets and network flow to detect intrusions. It is nearly impossible to monitor the payload of all packets in a high-speed network. On the other hand, the content of packets does not have sufficient information to detect a complex attack. Since the rate of attacks within encrypted communication is increasing and the content of encrypted packets is not accessible to NIDS, it has been suggested to monitor network flows. As most network intrusions spread within the network very quickly, in this paper we will propose a new real-time unsupervised NIDS for detecting new and complex attacks within normal and encrypted communications. To achieve having a real-time NIDS, the proposed model should capture live network traffic from different sensors and analyse specific metrics such as number of bytes, packets, network flows, and the time explicitly and implicitly, of packets and network flows, in the different resolutions. The NIDS will flag the time slot as an anomaly if any of those metrics passes the threshold, and it will send the time slot to the first engine. The first engine clusters different layers and dimensions of the network's behaviour and correlates the outliers to purge the intrusions from normal traffic. Detecting network attacks, which produce a huge amount of network traffic (e.g. DOS, DDOS, scanning) was the aim of proposing the first engine. Analysing statistics of network flows increases the feasibility of detecting intrusions within encrypted communications. The aim of proposing the second engine is to conduct a deeper analysis and correlate the traffic and behaviour of Bots (current attackers) during DDOS attacks to find the Bot-Master.
以前,网络入侵检测系统(NIDS)通过将网络行为与预先定义的规则或预先观察到的网络流量进行比较来检测入侵,这种方法在成本和时间上都很昂贵。无监督机器学习技术克服了这些问题,可以在没有任何先验知识的情况下检测正常或加密通信中的未知和复杂攻击。NIDS监视字节、数据包和网络流以检测入侵。在高速网络中监视所有数据包的有效载荷几乎是不可能的。另一方面,报文的内容没有足够的信息来检测复杂的攻击。由于加密通信中的攻击率越来越高,并且加密报文的内容无法被NIDS访问,因此建议对网络流量进行监控。由于大多数网络入侵在网络中传播非常迅速,在本文中,我们将提出一种新的实时无监督NIDS,用于检测正常和加密通信中的新的和复杂的攻击。为了实现实时NIDS,建议的模型应该从不同的传感器捕获实时网络流量,并以不同的分辨率分析特定的度量,如字节数、数据包、网络流以及数据包和网络流的显式和隐式时间。如果这些指标中的任何一个超过阈值,NIDS将把时隙标记为异常,并将该时隙发送到第一个引擎。第一个引擎对网络行为的不同层次和维度进行聚类,并将异常值关联起来,从正常流量中清除入侵。检测产生大量网络流量的网络攻击(例如DOS, DDOS,扫描)是提出第一个引擎的目的。分析网络流的统计数据增加了在加密通信中检测入侵的可行性。提出第二个引擎的目的是在DDOS攻击期间进行更深入的分析和关联bot(当前攻击者)的流量和行为,以找到Bot-Master。
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引用次数: 23
A novel approach for detecting alerts in urban pollution monitoring with low cost sensors 基于低成本传感器的城市污染监测预警新方法
Pub Date : 2013-11-14 DOI: 10.1109/IWMN.2013.6663783
Carlo Sansone, S. Manfredi, Edmondo Di Tucci, S. D. Vito, G. Fattoruso, F. Tortorella
The problem of estimating the pollutants in urban areas is one of the most active research in recent years due to the increasing concerns about their influence on human health. Solide state sensors, increasingly small and inexpensive, are being used to build compact multisensor devices. Suffering from sensors instabilities and cross-sensitivities, they need ad-hoc calibration procedures in order to reach satisfying performance levels. In this paper we propose a novel approach based on Nonlinear AutoRegressive eXogenous model (NARX) to estimate pollutants in urban area and detecting alerts with respect to law limits. We compared our proposal with two other techniques, based on a Feed Forward Neural Network and a Semi Supervised Learning approach, respectively. Numerical simulations have been carried out to validate the proposed approach on a real dataset.
由于城市污染物对人体健康的影响日益受到关注,城市污染物的估算问题是近年来研究最为活跃的问题之一。固态传感器体积越来越小,价格也越来越便宜,正被用于制造紧凑的多传感器设备。由于传感器的不稳定性和交叉灵敏度,它们需要特别的校准程序才能达到令人满意的性能水平。在本文中,我们提出了一种基于非线性自回归外生模型(NARX)的新方法来估计城市地区的污染物并根据法律限制检测警报。我们将我们的提议与另外两种技术进行了比较,分别基于前馈神经网络和半监督学习方法。在实际数据集上进行了数值模拟,验证了该方法的有效性。
{"title":"A novel approach for detecting alerts in urban pollution monitoring with low cost sensors","authors":"Carlo Sansone, S. Manfredi, Edmondo Di Tucci, S. D. Vito, G. Fattoruso, F. Tortorella","doi":"10.1109/IWMN.2013.6663783","DOIUrl":"https://doi.org/10.1109/IWMN.2013.6663783","url":null,"abstract":"The problem of estimating the pollutants in urban areas is one of the most active research in recent years due to the increasing concerns about their influence on human health. Solide state sensors, increasingly small and inexpensive, are being used to build compact multisensor devices. Suffering from sensors instabilities and cross-sensitivities, they need ad-hoc calibration procedures in order to reach satisfying performance levels. In this paper we propose a novel approach based on Nonlinear AutoRegressive eXogenous model (NARX) to estimate pollutants in urban area and detecting alerts with respect to law limits. We compared our proposal with two other techniques, based on a Feed Forward Neural Network and a Semi Supervised Learning approach, respectively. Numerical simulations have been carried out to validate the proposed approach on a real dataset.","PeriodicalId":218660,"journal":{"name":"2013 IEEE International Workshop on Measurements & Networking (M&N)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122102001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
A wireless network as support to the monitoring of Campi Flegrei volcano in Italy 意大利Campi Flegrei火山监测无线网络
Pub Date : 2013-11-14 DOI: 10.1109/IWMN.2013.6663779
G. Scarpato, T. Caputo, A. Caputo, W. D. Cesare, A. Esposito, M. Vadursi
The main purpose of this work is the design and implementation of an integrated wireless network as support to the multiparametric geophysical monitoring network of the Campi Flegrei volcanic area, in view of the increased need for seismic monitoring, which is a consequence of the drilling of an exploration well for scientific purposes. The goal is to increase the performance of the transmission system in terms of speed, real-time availability and reliability, given the high seismic risk and hazard associated with the experiment. The drilling is part of the international research project called “Campi Flegrei Deep Drilling Project” (CFDDP). For this purpose, in the first half of 2012, it was necessary to enhance the multiparametric monitoring network of Campi Flegrei, creating a subnet of seismic sensors, with limited geographical extension, but concentrated around the area of the well realization. The data acquisition from the monitoring center “Osservatorio Vesuviano”, section of Naples of the INGV, is guaranteed by a system of radio links in the 5 GHz band, due to the high interference in the typical band 802.11 and the highly urbanized area of interest. The subnet has shown a good cost/benefit ratio as regards the transmission, and it has proved to be useful for the monitoring purposes in order to detect in real time possible anomalies related to the drilling.
这项工作的主要目的是设计和实施一个集成无线网络,作为对Campi Flegrei火山区多参数地球物理监测网络的支持,因为为了科学目的而钻探勘探井增加了地震监测的需求。考虑到与实验相关的高地震风险和危害,目标是在速度、实时可用性和可靠性方面提高传输系统的性能。此次钻探是国际研究项目“Campi Flegrei Deep drilling project”(CFDDP)的一部分。为此,在2012年上半年,有必要加强Campi Flegrei的多参数监测网络,创建一个地震传感器子网,其地理扩展有限,但集中在油井实现区域周围。由于典型802.11频段的高干扰和高度城市化地区的利益,INGV那不勒斯部分的监测中心“Osservatorio Vesuviano”的数据采集由5 GHz频段的无线电链路系统保证。该子网在传输方面显示出良好的成本/效益比,并且已被证明用于监测目的,以便实时检测与钻井相关的可能异常。
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引用次数: 4
Choice of efficient simulator tool for wireless sensor networks 选择无线传感器网络的高效模拟器工具
Pub Date : 2013-11-14 DOI: 10.1109/IWMN.2013.6663805
Rym Chéour, M. W. Jmal, A. Lay-Ekuakille, F. Derbel, O. Kanoun, M. Abid
The wireless sensor networks are experiencing an extraordinary rise which is reflected by their omnipresence in various fields of application. They offer numerous challenges ranging from the stringent power constraints of each node, the need of cross-out to adapt to different conditions and the limited computation capabilities. To overcome these shortcomings and to follow the rapid hardware obsolescence and the need for functionality updates, it is necessary to use a simulation tool that can help designing and testing new hardware and software solutions. As there are many simulators, we make an attempt in this paper to specify the important ones related to energy consumption.
无线传感器网络在各个领域的应用无处不在,这反映了无线传感器网络的飞速发展。它们提供了许多挑战,从每个节点的严格功率限制,需要划叉以适应不同的条件以及有限的计算能力。为了克服这些缺点,并跟上硬件的快速过时和功能更新的需要,有必要使用一个仿真工具,可以帮助设计和测试新的硬件和软件解决方案。由于仿真器种类繁多,本文尝试对与能耗相关的重要仿真器进行详细说明。
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引用次数: 11
An integrated lifetime and network quality model of large WSNs 大型无线传感器网络寿命和网络质量集成模型
Pub Date : 2013-11-14 DOI: 10.1109/IWMN.2013.6663791
Ermanno Battista, V. Casola, S. Marrone, N. Mazzocca, Roberto Nardone, V. Vittorini
This paper introduces a modeling approach to the design and evaluation of large wireless sensor networks against the topology of the network and the monitoring application and taking into account the performance degradation due to the power consumption. The model is built by composing Stochastic Activity Network (SAN) models of the nodes and a Markovian Agent Model (MAM) of the whole network. The SAN models are used to conduct a performance analysis of the nodes (i.e. to measure their sampling time) and evaluate their mean time to discharge. The MAM is used to compose the results of the SAN model analysis into a complex topology-aware model able to evaluate the Packet Delivery Ratio (PDR) and the power consumption of the network. The possibility to model spatially distributed interdependencies featured by the MAM makes the integrated model a concrete, scalable mean to evaluate different design choices and perform meaningful what-if analyses. The model has been validated by comparing the analysis results with real node values: specifically we present the experimental results obtained by using TelosB nodes equipped with TinyOs.
本文介绍了一种基于网络拓扑结构和监控应用的大型无线传感器网络的设计和评估建模方法,并考虑了由于功耗而导致的性能下降。该模型由节点的随机活动网络(SAN)模型和整个网络的马尔可夫智能体模型(MAM)组成。SAN模型用于对节点进行性能分析(即测量其采样时间)并评估其平均放电时间。MAM用于将SAN模型分析的结果组合成一个复杂的拓扑感知模型,该模型能够评估PDR (Packet Delivery Ratio)和网络功耗。对MAM所具有的空间分布的相互依赖性进行建模的可能性,使集成模型成为评估不同设计选择和执行有意义的假设分析的具体、可扩展的手段。通过将分析结果与实际节点值进行比较,验证了模型的有效性,并给出了搭载TinyOs的TelosB节点的实验结果。
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引用次数: 3
期刊
2013 IEEE International Workshop on Measurements & Networking (M&N)
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