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Undersampling and SNR Degradation in Practical Direct RF Sampling Systems 实际直接射频采样系统中的欠采样和信噪比退化
Pub Date : 2023-06-06 DOI: 10.1109/EuCNC/6GSummit58263.2023.10188304
Dennis Osterland, Andreas Benzin, F. Gerfers, G. Caire
Advances in semiconductor technology are leading to ever-higher sampling rates for analog-to-digital converters (ADCs). In traditional systems, (cellular) radio signals had to be downconverted in the analog domain from radio frequency (RF) to baseband (BB) using direct conversion receivers (DCRs) in which the ADCs could operate at low sampling rates. Due to advances in ADC technology, modern direct RF (DRF) sam-pling ADCs are able to sample directly in the RF domain, opening up new application possibilities. In order to reduce the required sampling rate, it is particularly interesting to use undersampling techniques in these DRF systems. However, there are some SNR-decreasing problems associated with this approach, such as the noise folding effect, which need to be carefully considered. This paper provides a detailed investigation of practical DRF undersampling systems in theory and practice. It is shown analytically and with experimental verification that noise enhancement due to noise folding is a negligible effect in real-world DRF implementations. Furthermore, the results of this paper motivate reduced complexity and reduced power consumption DRF undersampling ADC architectures with high analog bandwidth but relatively low sampling rate.
半导体技术的进步导致模数转换器(adc)的采样率越来越高。在传统系统中,(蜂窝)无线电信号必须使用直接转换接收器(dcr)在模拟域中从射频(RF)下变频到基带(BB),其中adc可以以低采样率工作。由于ADC技术的进步,现代直接RF (DRF)采样ADC能够直接在RF域进行采样,开辟了新的应用可能性。为了降低所需的采样率,在这些DRF系统中使用欠采样技术是特别有趣的。然而,这种方法存在一些降低信噪比的问题,如噪声折叠效应,需要仔细考虑。本文对实际的DRF欠采样系统在理论和实践上进行了详细的研究。通过分析和实验验证表明,在实际的DRF实现中,由于噪声折叠引起的噪声增强是可以忽略不计的影响。此外,本文的结果激发了具有高模拟带宽但相对较低采样率的DRF欠采样ADC架构的降低复杂性和降低功耗。
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引用次数: 0
Distributed Learning-Based Intrusion Detection in 5G and Beyond Networks 5G及以后网络中基于分布式学习的入侵检测
Pub Date : 2023-06-06 DOI: 10.1109/EuCNC/6GSummit58263.2023.10188312
Cheolhee Park, Kyung-Woo Park, Jihyeon Song, Jong-Hoi Kim
As mobile technology has evolved over generations, communication systems have advanced along with it. Moreover, the 6th generation (6G) of mobile networks is expected to evolve into a more decentralized and open environment. Meanwhile, with these advancements in network systems, the attack surface that can be exposed to adversaries has expanded, and potential threats have become more sophisticated. To secure network sys-tems from these potential attacks, various studies have focused on intrusion detection systems. In particular, studies on artificial intelligence-based network intrusion detection systems have been actively conducted and have shown remarkable results. However, most of these studies concentrate on centralized environments and may not be suitable for deployment in distributed systems. In this paper, we propose a distributed learning-based intrusion detection system that can efficiently train predictive models in a decentralized environment and enable learning in systems with varying computing capabilities. We leveraged a state-of-the-art split learning approach, which allows for models to be trained in distributed systems with different computing resources. In our experiments, we evaluate the models using data collected in a 5G mobile network environment and demonstrate that the proposed system can be applied for network security in the next-generation mobile environment.
随着移动技术的不断发展,通信系统也随之发展。此外,第六代(6G)移动网络预计将演变成一个更加分散和开放的环境。与此同时,随着网络系统的这些进步,可以暴露给对手的攻击面已经扩大,潜在的威胁变得更加复杂。为了保护网络系统免受这些潜在的攻击,各种研究都集中在入侵检测系统上。特别是基于人工智能的网络入侵检测系统研究积极开展,并取得了显著成果。然而,这些研究大多集中在集中式环境上,可能不适合部署在分布式系统中。在本文中,我们提出了一种基于分布式学习的入侵检测系统,该系统可以在分散的环境中有效地训练预测模型,并使具有不同计算能力的系统能够学习。我们利用了最先进的分割学习方法,它允许在具有不同计算资源的分布式系统中训练模型。在我们的实验中,我们使用在5G移动网络环境中收集的数据来评估模型,并证明所提出的系统可以应用于下一代移动环境中的网络安全。
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引用次数: 1
Depolarisation Model for a BAN Indoor Scenario BAN室内场景的去极化模型
Pub Date : 2023-06-06 DOI: 10.1109/EuCNC/6GSummit58263.2023.10188272
Manuel M. Ferreira, F. Cardoso, S. Ambroziak, Mariella Särestöniemi, K. Turbic, L. Correia
In this paper, an analysis of depolarisation in Body Area Networks for Body-to-Infrastructure communications based on a measurement campaign in the 5.8 GHz band in an indoor environment is performed. Measurements were made with an off-body antenna transmitting linearly polarised signals and dual-polarised receiving antennas carried by the user on the body. A Normal Distribution with a mean of 2.0 dB and a standard deviation of 4.3 dB is found to be the best fit for modelling cross-polarisation discrimination. The average correlation between the signals received by the orthogonally polarised antennas is below 0.5, showing that polarisation diversity can be used. A model is proposed for the average value of the standard deviation of the cross-polarisation discrimination ratio as a function of the transmitted polarisation, the mobility of users and link dynamics.
本文基于室内环境下5.8 GHz频段的测量活动,对体域网络中体对基础设施通信的去极化进行了分析。测量是用一个发射线性极化信号的离体天线和用户携带在身上的双极化接收天线进行的。发现均值为2.0 dB、标准差为4.3 dB的正态分布最适合模拟交叉极化区分。正交极化天线接收到的信号的平均相关系数小于0.5,表明极化分集是可以使用的。提出了交叉极化判别比的标准差平均值与传输极化、用户移动和链路动态的函数关系模型。
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引用次数: 0
Temporal Self-organizing Maps for Prediction of Feature Evolution 预测特征演化的时间自组织映射
Pub Date : 2023-06-06 DOI: 10.1109/EuCNC/6GSummit58263.2023.10188366
Prayag Gowgi, V. Yajnanarayana
The future wireless network deployments in 5G and beyond are dense, operating at multiple frequency bands, and support higher capacity by opportunistically selecting among multiple frequency bands. This results in frequent measurement across different frequency bands, increased battery draining of user equipment (UE), excessive traffic in the control plane and higher latency. In this study, we propose spatio-temporal self-organizing maps for predicting the time evolution of multiple downlink and uplink features by computing the Markov order of the multi-variate time series. We develop an algorithm to estimate the Markov order and use it in conjunction with spatio-temporal self-organizing maps to predict signal dynamics. The proposed algorithm is validated against the publicly available data-sets and Ericsson's 5G test-bed data-sets. The proposed algorithm is able to predict signals up to 13 and 28 seconds into the future for fast and slow-moving UEs.
未来5G及以后的无线网络部署是密集的,在多个频段上运行,并通过在多个频段中进行机会性选择来支持更高的容量。这将导致跨不同频段的频繁测量,增加用户设备(UE)的电池消耗,控制平面中的流量过大以及更高的延迟。在这项研究中,我们提出了时空自组织映射,通过计算多变量时间序列的马尔可夫阶来预测多个下行和上行特征的时间演变。我们开发了一种估计马尔可夫阶的算法,并将其与时空自组织映射结合使用来预测信号动力学。针对公开可用的数据集和爱立信的5G测试平台数据集,对所提出的算法进行了验证。所提出的算法能够预测未来13秒和28秒的信号,用于快速和缓慢移动的ue。
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引用次数: 0
Study on Handover Techniques for Satellite-to-Ground Links in High and Low Interference Regimes 高、低干扰条件下星地链路切换技术研究
Pub Date : 2023-06-06 DOI: 10.1109/EuCNC/6GSummit58263.2023.10188361
Abhipshito Bhattacharya, M. Petrova
The launch of private non-geostationary satellite orbit (NGSO) satellite constellations in recent years such as SpaceX's Starlink and Amazon's Kuiper has put satellite communications in focus as a potential provider of high-throughput broadband services. It is expected that satellite networks will be integrated into future 6G networks, and fortify global connectivity in the upcoming years. One major challenge with these NGSO networks, is the mobility-management. Due to the inherent high speed mobility of the satellites, the coverage area from a particular satellite to the ground is constantly moving, so frequent handovers are needed to sustain satellite-to-ground links. In this paper, we implement and evaluate the impact of three satellite-to-ground-link handover (HO) strategies, namely Closest Satellite, Max-Visibility and CINR - Threshold on the satellite-to-ground link performance in terms of spectrum efficiency and HO rate under high and low interference regimes. We consider three prominent private LEO mega-constellations namely SpaceX Gen2, Kuiper and OneWebLEO; and one MEO constellation namely Mangata, all operating in the Ka-band. Through extensive simulations we show that the CINR-Threshold strategy gives the best trade-off between throughput and HO rate, irrespective of the constellation design, level of interference and location.
近年来,SpaceX的Starlink和亚马逊的Kuiper等私人非地球静止卫星轨道(NGSO)卫星星座的发射,使卫星通信成为高通量宽带服务的潜在提供商,成为人们关注的焦点。预计卫星网络将被整合到未来的6G网络中,并在未来几年加强全球连接。这些NGSO网络面临的一个主要挑战是移动性管理。由于卫星固有的高速移动性,从特定卫星到地面的覆盖区域是不断移动的,因此需要频繁的切换来维持卫星到地面的连接。本文在高干扰和低干扰条件下,从频谱效率和HO速率的角度,实现并评估了三种星地链路切换策略(即最接近卫星、最大可见性和CINR - Threshold)对星地链路性能的影响。我们考虑了三个著名的私人LEO巨型星座,即SpaceX Gen2、Kuiper和OneWebLEO;以及一个MEO星座,即Mangata,都在ka波段运行。通过大量的仿真,我们表明cinr阈值策略在吞吐量和HO速率之间给出了最佳权衡,而不考虑星座设计,干扰水平和位置。
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引用次数: 0
DESK: Distributed Observability Framework for Edge-Based Containerized Microservices 基于边缘的容器化微服务的分布式可观察性框架
Pub Date : 2023-06-06 DOI: 10.1109/EuCNC/6GSummit58263.2023.10188344
Muhammad Usman, Simone Ferlin Oliveira, A. Brunström, J. Taheri
Modern information technology (IT) infrastructures are becoming more complex to meet the diverse demands of emerging technology paradigms such as 5G/6G networks, edge, and internet of things (IoT). The intricacy of these infrastructures grows further when hosting containerized workloads as microservices, resulting in the challenge to detect and troubleshoot performance issues, incidents or even outages of critical use cases like industrial automation processes. Thus, fine-grained measurements and associated visualization are essential for operation observability of these IT infrastructures. However, most existing observability tools operate independently without systematically covering the entire data workflow. This paper presents an integrated design for multi-stage observability workflows, denoted as DistributEd obServability frameworK (DESK). The proposed framework aims to improve observability workflows for measurement, collection, fusion, storage, visualization, and notification. As a proof of concept, we deployed the framework in a Kubernetes-based testbed to demonstrate the successful integration of various components and usability of collected observability data. We also conducted a comprehensive study to determine the caused overhead by DESK agents at the reasonably powerful edge node hardware, which shows on average a CPU and memory overhead of around 2.5 % of total available hardware resource.
现代信息技术基础设施日益复杂化,以满足5G/6G网络、边缘、物联网等新兴技术范式的多样化需求。当将容器化的工作负载作为微服务托管时,这些基础设施的复杂性会进一步增加,从而导致检测和排除性能问题、事件甚至工业自动化流程等关键用例中断的挑战。因此,细粒度的测量和相关的可视化对于这些IT基础设施的操作可观察性至关重要。然而,大多数现有的可观测性工具都是独立运行的,没有系统地覆盖整个数据工作流。提出了一种多阶段可观察性工作流的集成设计,称为分布式可观察性框架(DistributEd observability frameworK, DESK)。提出的框架旨在改进测量、收集、融合、存储、可视化和通知的可观察性工作流程。作为概念验证,我们在基于kubernetes的测试平台中部署了该框架,以演示各种组件的成功集成以及收集的可观察性数据的可用性。我们还进行了一项全面的研究,以确定DESK代理在相当强大的边缘节点硬件上造成的开销,结果显示,CPU和内存开销平均约占总可用硬件资源的2.5%。
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引用次数: 0
Non-geometric correlated channel fading model with linear complexity 具有线性复杂度的非几何相关信道衰落模型
Pub Date : 2023-06-06 DOI: 10.1109/EuCNC/6GSummit58263.2023.10188367
Tobias W. Weber, Eike Lyczkowski, W. Kiess
Simulations are an important component for the investigation of wireless technologies. Thereby, a compute efficient channel model is needed for simulations of the physical layer. For the investigation of packet duplication a fading model with correlated channels is of high importance. We propose such a complexity-optimized fading model whose parameters fading strength, autocorrelation and channel correlation can be adjusted with fine granularity. The model is based on the sum of sinusoids method and includes Rayleigh distributed small scale fading and normal distributed large scale fading. The model is validated for its mathematical properties within a wide parameter range and its source code is published.
仿真是研究无线技术的重要组成部分。因此,需要一种计算效率高的信道模型来进行物理层的仿真。对于分组重复的研究,一个具有相关信道的衰落模型是非常重要的。我们提出了一种复杂度优化的衰落模型,该模型的衰落强度、自相关和信道相关参数可以细粒度调节。该模型基于正弦波和法,包括瑞利分布小尺度衰落和正态分布大尺度衰落。在较宽的参数范围内验证了该模型的数学性质,并公布了其源代码。
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引用次数: 0
Experimental Assessment of Electromagnetic Field Exposure from 5G Terminal Devices 5G终端设备电磁场暴露实验评估
Pub Date : 2023-06-06 DOI: 10.1109/EuCNC/6GSummit58263.2023.10188351
Ch. Chountala, Isabella Cerutti, J. Chareau, Philippe Viaud, Fausto Bonavitacola
Electromagnetic field (EMF) exposure from mobile networks is raising discussions not only on their safety levels but also on the assessment methods, since the evolution of technology among the various generations requires different measurement techniques. This paper describes an experimental study for measuring the 5G EMF emissions caused by mobile terminals. To consider a realistic worst-case scenario, the measurements were taken in the direction of maximum antenna gain of the devices while inducing maximum uplink traffic in the mobile channel. The results provide valuable feedback on the exposure assessment of the mobile terminals connected to 5G networks. Moreover the measurement setup and methodology can provide useful insights in developing exposure setups for future studies analyzing biological interactions with EMFs.
来自移动网络的电磁场暴露不仅引起了对其安全水平的讨论,而且引起了对评估方法的讨论,因为各代人之间技术的发展需要不同的测量技术。本文介绍了一种测量移动终端引起的5G EMF辐射的实验研究。为了考虑现实的最坏情况,测量是在设备最大天线增益的方向上进行的,同时在移动信道中诱导最大上行流量。研究结果为连接5G网络的移动终端的暴露评估提供了有价值的反馈。此外,测量设置和方法可以为未来研究分析生物与电磁场相互作用的暴露设置提供有用的见解。
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引用次数: 0
Developing 6G Visions with Stakeholder Analysis of 6G Ecosystem 通过6G生态系统的利益相关者分析开发6G愿景
Pub Date : 2023-06-06 DOI: 10.1109/EuCNC/6GSummit58263.2023.10188379
Seppo Yrjölä, Marja Matinmikko-Blue, Petri Ahokangas
This paper expands the current 6G visioning stemming from usage scenarios, key value and key performance indicators towards stakeholder dynamics utilizing stakeholder analysis from strategic management. In developing a future oriented 6G system involving incumbents and a large number of novel stakeholders with distinct views, it is essential to understand the operational environment, key stakeholder interactions, and dynamics. This paper explores the origins of the 6G platforms and identifies key stakeholders of the future 6G ecosystem. Stakeholder salience attributes including power, legitimacy, and urgency are further analyzed. Results indicate that the competition for digital platforms' power and legitimacy is intensifying as catalytic combinations of cloud computing, AI and data are ubiquitously embedded and multiplying their impact across 6G system. The urgency indicators for the development of pervasive general-purpose 6G are collaborative research, harmonized standardization, and anticipatory regulation efforts for empowered users and developers in the ecosystem.
本文利用战略管理中的利益相关者分析,从使用场景、关键价值和关键绩效指标出发,将当前的6G愿景扩展到利益相关者动态。在开发面向未来的6G系统时,涉及现有企业和大量具有不同观点的新利益相关者,了解运营环境、关键利益相关者的互动和动态至关重要。本文探讨了6G平台的起源,并确定了未来6G生态系统的关键利益相关者。进一步分析了利益相关者突出属性,包括权力、合法性和紧迫性。结果表明,随着云计算、人工智能和数据的催化组合无处不在,并在6G系统中扩大其影响,数字平台的力量和合法性的竞争正在加剧。普及通用6G发展的紧迫性指标是协作研究、协调标准化以及为生态系统中的授权用户和开发人员提供的预期监管工作。
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引用次数: 2
AI-Powered Edge Computing Evolution for Beyond 5G Communication Networks 超越5G通信网络的ai驱动边缘计算演进
Pub Date : 2023-06-06 DOI: 10.1109/EuCNC/6GSummit58263.2023.10188371
E. Kartsakli, J. Pérez-Romero, O. Sallent, N. Bartzoudis, Valerio Frascella, S. Mohalik, Thiis Metsch, A. Antonopoulos, Ömer Faruk Tuna, Yansha Deng, Xin Tao, M. A. Serrano, E. Quiñones
Edge computing is a key enabling technology that is expected to play a crucial role in beyond 5G (B5G) and 6G communication networks. By bringing computation closer to where the data is generated, and leveraging Artificial Intelligence (AI) capabilities for advanced automation and orchestration, edge computing can enable a wide range of emerging applications with extreme requirements in terms of latency and computation, across multiple vertical domains. In this context, this paper first discusses the key technological challenges for the seamless integration of edge computing within B5G/6G and then presents a roadmap for the edge computing evolution, proposing a novel design approach for an open, intelligent, trustworthy, and distributed edge architecture.
边缘计算是一项关键的使能技术,预计将在超5G (B5G)和6G通信网络中发挥关键作用。通过使计算更接近数据生成的位置,并利用人工智能(AI)功能实现高级自动化和编排,边缘计算可以在多个垂直领域实现各种新兴应用程序,这些应用程序在延迟和计算方面具有极端要求。在此背景下,本文首先讨论了在B5G/6G中无缝集成边缘计算的关键技术挑战,然后提出了边缘计算发展的路线图,提出了一种开放、智能、可信和分布式边缘架构的新设计方法。
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引用次数: 1
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公共管理高层论坛
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