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2021 16th International Conference on Telecommunications (ConTEL)最新文献

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Analysis of Open Access Data Sources for Application in Precision Agriculture 面向精准农业应用的开放数据源分析
Pub Date : 2021-06-30 DOI: 10.23919/ConTEL52528.2021.9495978
Pavle Skocir, Katarina Mandaric, I. Kralj, Ivana Podnar Žarko, G. Jezic
Precision agriculture uses new technologies to improve crop yields and increase profitability for farmers while reducing the inputs required to grow crops, such as land, water, fertilizers, pesticides, etc. Environmental microclimate data (e.g., air and soil temperature or moisture) are needed as inputs to precision agriculture applications so that adequate decisions and agrotechnical measures can be applied in the fields. Most of the existing precision agriculture solutions for environmental and crop monitoring use locally deployed sensors as the main data source. Since the deployment and maintenance of physical sensors in the fields potentially involves significant costs and human effort, open-access data sources may be an effective complement to environmental data from deployed sensors, but the question remains whether open-access data sources are comparable to locally deployed sensors in terms of accuracy. This paper analyzes the correlation between open environmental data sources provided by the Copernicus ERA5-Land and Agri4Cast data sets, and data collected by locally deployed sensors to determine the extent to which open data sources can be used in precision agriculture.
精准农业使用新技术来提高作物产量,增加农民的盈利能力,同时减少种植作物所需的投入,如土地、水、肥料、农药等。需要环境小气候数据(例如空气和土壤温度或湿度)作为精准农业应用的投入,以便在田间应用适当的决策和农业技术措施。大多数用于环境和作物监测的现有精准农业解决方案都使用本地部署的传感器作为主要数据源。由于在现场部署和维护物理传感器可能涉及大量成本和人力,因此开放获取数据源可能是对部署传感器的环境数据的有效补充,但问题仍然是开放获取数据源在准确性方面是否与本地部署的传感器相当。本文分析了哥白尼ERA5-Land和Agri4Cast数据集提供的开放环境数据源与当地部署的传感器收集的数据之间的相关性,以确定开放数据源在精准农业中的应用程度。
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引用次数: 0
Video production systems for videoconferencing and distance learning solutions 用于视频会议和远程学习的视频制作系统解决方案
Pub Date : 2021-06-30 DOI: 10.23919/ConTEL52528.2021.9495973
Tim Jeršič, Žana Juvan, Klemen Pecnik
This paper includes a quick overview of different distance learning solutions, learning management systems, videoconferencing platforms with emphasis on bundles of equipment for video production and videoconferencing usage. Different types of integration between learning management systems and videoconferencing platforms are presented, backed up with solutions used at the University of Ljubljana. Additionally, several types of equipment bundles are proposed as suitable solutions to fulfil as many scenarios as possible with special emphasis on flexibility and compatibility. At the end automation aspects and further development and usage are discussed.
本文包括不同的远程学习解决方案,学习管理系统,视频会议平台的快速概述,重点是视频制作和视频会议使用的设备包。介绍了学习管理系统和视频会议平台之间不同类型的集成,并以卢布尔雅那大学使用的解决方案为后盾。此外,提出了几种类型的设备包作为合适的解决方案,以满足尽可能多的场景,特别强调灵活性和兼容性。最后对自动化方面以及进一步的开发和应用进行了讨论。
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引用次数: 0
Comparing energy consumption of application layer protocols on IoT devices 对比物联网设备的应用层协议能耗
Pub Date : 2021-06-30 DOI: 10.23919/ConTEL52528.2021.9495993
Tomislav Stefanec, M. Kusek
Different IoT application layer protocols offer different benefits, but they also have their set of drawbacks. Energy consumption has become an extremely important factor as more and more battery-powered and resource-constrained IoT devices are deployed worldwide. In this paper, measurements of energy consumption and network traffic profiles of the most commonly used IoT application layer protocols (HTTP, HTTP2, CoAP, MQTT, and AMQP) are presented. The measurements of all these protocols are performed on real hardware, for different packet sizes and different QoS levels, depending on what the protocols support.
不同的物联网应用层协议提供不同的好处,但它们也有各自的缺点。随着越来越多的电池供电和资源受限的物联网设备在全球范围内部署,能源消耗已成为一个极其重要的因素。本文介绍了最常用的物联网应用层协议(HTTP、HTTP2、CoAP、MQTT和AMQP)的能耗和网络流量概况的测量。所有这些协议的测量都是在真实的硬件上执行的,针对不同的数据包大小和不同的QoS级别,这取决于协议支持什么。
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引用次数: 1
Keynote 3: Quality of Experience in the Era of Immersive Networked Multimedia Services 主题演讲3:沉浸式网络多媒体服务时代的体验质量
Pub Date : 2021-06-30 DOI: 10.23919/contel52528.2021.9495958
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引用次数: 0
Heterogeneous autonomous robotic system in viticulture and mariculture - project overview 葡萄栽培和海水养殖中的异构自主机器人系统-项目概述
Pub Date : 2021-06-30 DOI: 10.23919/ConTEL52528.2021.9495969
Jurica Goricanec, Nadir Kapetanović, Ivo Vatavuk, Ivan Hrabar, Goran Vasiljević, G. Gledec, Dario Stuhne, S. Bogdan, M. Orsag, T. Petrović, N. Mišković, Z. Kovačić, Antonia Kurtela, J. Bolotin, V. Kozul, N. Glavic, N. Antolovic, M. Anić, B. Kozina, Marko Cukon
This paper presents the overview and preliminary results of the HEKTOR - Heterogeneous Autonomous Robotic System in Viticulture and Mariculture project. HEKTOR is divided into two main parts, each dealing with specific scenarios in viticulture and mariculture. The robots used in the project and each specific scenario considered are presented. In viticulture, this includes vineyard surveillance, spraying and bud rubbing using an all-terrain mobile manipulator and unmanned aerial vehicle (UAV). In mariculture, scenarios include coordinated monitoring of fish net cages from below the surface and from the air, using the UAV, an unmanned surface vehicle (USV) and a remotely operated underwater vehicle (ROV).
本文介绍了HEKTOR -异构自主机器人系统在葡萄栽培和海水养殖项目中的概况和初步成果。HEKTOR分为两个主要部分,每个部分都涉及葡萄栽培和海水栽培的具体情况。介绍了项目中使用的机器人以及所考虑的每个特定场景。在葡萄栽培中,这包括使用全地形移动机械手和无人机(UAV)进行葡萄园监视、喷洒和擦芽。在海水养殖中,场景包括使用无人机,无人水面航行器(USV)和远程操作水下航行器(ROV)从水面下和空中协调监测渔网笼。
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引用次数: 9
Low-Cost Wireless Sensor Node for Smart Agriculture Applications 智能农业应用的低成本无线传感器节点
Pub Date : 2021-06-30 DOI: 10.23919/ConTEL52528.2021.9495976
Matko Zrnic, Josip Spisic, Anita Pejković, K. Grgic, J. Balen, D. Zagar
Measuring temperature and humidity is probably the most interesting parameter set for smart agriculture. Using simple hardware and low-power long-range communication is a great way to archive weather monitoring and collecting data from the field. In this paper, a low-cost weather station based on IoT LoRa communication is proposed. This simple solution for monitoring the two weather parameters - temperature and humidity of a particular location continuously and uploading the data to the web server using the commercially available gateway.
测量温度和湿度可能是智能农业最有趣的参数设置。使用简单的硬件和低功耗远程通信是存档天气监测和从现场收集数据的好方法。本文提出了一种基于物联网LoRa通信的低成本气象站。这个简单的解决方案,监测两个天气参数-温度和湿度的一个特定的位置连续和上传数据到web服务器使用市售网关。
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引用次数: 2
Design of Wave Digital Filters with the TU Delft Toolbox 用TU Delft工具箱设计波浪数字滤波器
Pub Date : 2021-06-30 DOI: 10.23919/ConTEL52528.2021.9495968
Moritz Tockner, H. Brachtendorf, M. Steiger
This paper presents a method for the design of lattice wave digital filters (LWDFs) with an approximately linear phase response. A recently developed algorithm for the design of approximately linear phase allpass filters was utilized in combination with the LWDF structure, to synthesize frequency selective filters with a high phase response flatness. An iterative optimization method to generate such an LWDF for a given set of frequency response constraints was implemented and integrated into an open source LWDF design toolbox to allow an outreach to a broader audience. Additionally, the generated floating point LWDF coefficients can be quantized as multiplier-free signed digits by solving a nonlinear optimization problem. The design toolbox finds the coefficient representation requiring the minimum number of additions and/or subtractions, while still satisfying a given set of frequency response constraints. The results show the effectiveness of the filter design method compared to standard designs such as Butterworth, Tschebyscheff or Cauer and they highlight the differences to another existing linear phase method of the toolbox. A significant improvement can be seen in a comparison between the signed digit quantization compared to simple coefficient rounding.
本文提出了一种近似线性相位响应的点阵波数字滤波器的设计方法。结合LWDF结构,提出了一种设计近似线性相位全通滤波器的新算法,合成了相位响应平坦度高的频率选择滤波器。实现了一种迭代优化方法,用于为给定的一组频率响应约束生成这样的LWDF,并将其集成到开源LWDF设计工具箱中,以允许向更广泛的受众进行扩展。此外,通过求解非线性优化问题,可以将生成的浮点LWDF系数量化为无乘数的有符号数字。设计工具箱找到需要最少数量的加法和/或减法的系数表示,同时仍然满足给定的一组频率响应约束。结果表明,与Butterworth, Tschebyscheff或Cauer等标准设计相比,滤波器设计方法的有效性,并突出了与工具箱中另一种现有线性相位方法的差异。与简单的系数舍入相比,在有符号数字量化之间的比较中可以看到显著的改进。
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引用次数: 0
An Application Programming Interface for Advanced Analytics of Contextually Enriched Automotive Data 上下文丰富的汽车数据高级分析的应用程序编程接口
Pub Date : 2021-06-30 DOI: 10.23919/ConTEL52528.2021.9495964
Hrvoje Vdovic, Jurica Babic, V. Podobnik
The amount of data generated by vehicles has increased in recent years. Automotive manufacturers employ data processing and analysis to gain insights from the data they collect from vehicles. Contextually enriching vehicle-generated data with information describing location, weather and traffic is a way to generate even more insights into driver behaviour profiling and transportation sustainability. As the contextually enriched automotive data is usually stored in big data storage platforms, a middleware solution is needed to provide an abstraction layer for the stored data. Application programming interfaces (APIs) are commonly used as a bridge between the data consumers and the collected data. This paper describes one such API for advanced analytics of contextually enriched automotive data. The collection, contextual enrichment and data model of the data offered by the API is shown, along with the APIs architecture and available functionalities. To show the usability of the API, two use cases from the automotive domain are demonstrated: (i) contextually enriched automotive data visualization; and (ii) eco-efficient driving pattern evaluation.
近年来,车辆产生的数据量有所增加。汽车制造商使用数据处理和分析来从他们从车辆收集的数据中获得见解。通过位置、天气和交通信息来丰富车辆生成的数据,可以更深入地了解驾驶员行为特征和交通可持续性。由于上下文丰富的汽车数据通常存储在大数据存储平台中,因此需要中间件解决方案为存储的数据提供抽象层。应用程序编程接口(api)通常用作数据使用者和收集的数据之间的桥梁。本文描述了一个这样的API,用于对上下文丰富的汽车数据进行高级分析。显示了API提供的数据的集合、上下文丰富和数据模型,以及API体系结构和可用功能。为了展示API的可用性,演示了来自汽车领域的两个用例:(i)上下文丰富的汽车数据可视化;(2)生态高效驾驶模式评价。
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引用次数: 1
On Machine Learning Based Video QoE Estimation Across Different Networks 基于机器学习的不同网络视频QoE估计
Pub Date : 2021-06-30 DOI: 10.23919/ConTEL52528.2021.9495971
Irena Orsolic, Michael Seufert
With Over-The-Top traffic being extensively encrypted end-to-end, network operators typically lack insight into the performance of these services, as perceived by the end users. Yet, such an insight is essential for employing QoE-aware network management and potential alleviation of problems that may originate in the network. There is a clear interest from network operators to find ways to estimate service performance in terms of Key Performance Indicators (KPIs) and Quality of Experience (QoE). Over the last years, machine-learning–based (ML) models have proven to be capable of inferring QoE/KPIs from patterns in encrypted network traffic. The particular focus has mostly been on adaptive video streaming services, considering their share of the global network traffic. Those ML–based models have typically been trained and tested on a single dataset collected under specific conditions only. Going beyond related work on the topic of QoE/KPI estimation, we collected two large datasets related to YouTube streaming using the same setup at two different locations in Europe and analyzed the extent to which the differences in network characteristics and location specifics influence the performance of such models. This is of interest, as applicability of the models across diverse networks would significantly reduce the needed extensiveness of data collection typically required for ML–based approaches. In this paper, we compare models trained and tested on a single dataset/location (network-specific), models trained on the merged dataset (general), and models trained on one dataset and tested on the other dataset (cross-tested). The results show that the performance of general models is comparable to that of network-specific models, but cross-tests exhibit a considerable reduction in performance. With the aim to understand and improve cross-network applicability of the models in the future, the paper also provides an investigation of underlying reasons for the performance degradation.
由于over - top流量被广泛地端到端加密,网络运营商通常缺乏对这些服务性能的洞察力,正如最终用户所感知的那样。然而,这种洞察力对于采用qos感知网络管理和潜在的缓解可能源于网络的问题是必不可少的。网络运营商显然有兴趣找到根据关键绩效指标(kpi)和体验质量(QoE)来评估服务绩效的方法。在过去几年中,基于机器学习(ML)的模型已被证明能够从加密网络流量中的模式推断QoE/ kpi。考虑到视频流服务在全球网络流量中所占的份额,特别关注的焦点主要集中在自适应视频流服务上。这些基于ml的模型通常只在特定条件下收集的单个数据集上进行训练和测试。除了QoE/KPI估计主题的相关工作之外,我们在欧洲的两个不同地点使用相同的设置收集了两个与YouTube流媒体相关的大型数据集,并分析了网络特征和位置细节的差异对此类模型性能的影响程度。这很有趣,因为模型跨不同网络的适用性将显著减少基于ml的方法通常所需的数据收集的广泛性。在本文中,我们比较了在单个数据集/位置(特定于网络)上训练和测试的模型,在合并数据集上训练的模型(一般),以及在一个数据集上训练并在另一个数据集上测试的模型(交叉测试)。结果表明,一般模型的性能与特定网络模型的性能相当,但交叉测试显示性能有相当大的降低。为了理解和提高模型在未来的跨网络适用性,本文还对性能下降的潜在原因进行了调查。
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引用次数: 5
Detection of attacks and intrusions on automotive engine IoT sensors 检测对汽车发动机物联网传感器的攻击和入侵
Pub Date : 2021-06-30 DOI: 10.23919/ConTEL52528.2021.9495981
Denis Pejić, Visnja Krizanovic, K. Grgic
Predictive maintenance is used to predict system failures using deep learning algorithms and IoT sensors. However, IoT sensors and deep learning algorithms are susceptible to attacks, which at the same time poses a serious threat as far as car engine IoT sensors are concerned. This paper tends to research the consequence of false data injection on IoT automotive engine sensors, which can result in disastrous results. Also, the following deep learning algorithms are used in this paper to detect attacks and intrusions on automotive engine IoT sensors: RNN (Recurrent Neural Networks), LSTM (Long Short Term Memory Networks), GAN (Generative Adversarial Networks) and a new developed algorithm SPNN (Sequential Probability Neural Networks). The new SPNN algorithm was the fastest in detecting and preventing attacks/intrusions on automotive engine IoT sensors when it came to continuous attack, but the GAN algorithm was the fastest in detecting and preventing attacks/intrusions on automotive engine IoT sensors when it came to temporary attack.
预测性维护使用深度学习算法和物联网传感器来预测系统故障。然而,物联网传感器和深度学习算法容易受到攻击,这同时对汽车发动机物联网传感器构成了严重威胁。本文旨在研究虚假数据注入对物联网汽车发动机传感器的影响,它可能会导致灾难性的后果。此外,本文还使用以下深度学习算法来检测对汽车发动机物联网传感器的攻击和入侵:RNN(循环神经网络),LSTM(长短期记忆网络),GAN(生成对抗网络)和新开发的算法SPNN(顺序概率神经网络)。新的SPNN算法在检测和防止对汽车发动机物联网传感器的攻击/入侵方面是最快的,当涉及到持续攻击时,GAN算法在检测和防止对汽车发动机物联网传感器的攻击/入侵方面是最快的。
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引用次数: 2
期刊
2021 16th International Conference on Telecommunications (ConTEL)
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