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2022 IEEE 23rd International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM)最新文献

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Enhancing URLLC in Integrated Aerial Terrestrial Networks: Design Insights and Performance Trade-offs 增强综合空中地面网络的URLLC:设计见解和性能权衡
Muhammad Awais, H. Pervaiz, M. Jamshed, Wenjuan Yu, Q. Ni
Non-orthogonal multiple access (NOMA) is a promising radio access technique that enables massive connectivity and increased spectral efficiency. The deployment of aerial base stations (ABSs) as a relay is also an optimistic goal that fairly serves a large number of internet of things (IoT) devices. On one side, ABS-assisted communication leverages effective communication services for secondary IoT devices in smart cities. On the other hand, NOMA allows several IoT devices to concurrently acquire the same frequency-time resource. To this end, weighted sum-rate (WSR) is an essential goal because it allows numerous trade-offs between user fairness and sum-rate efficiency. Therefore, this work aims to investigate the WSR for an integrated aerial terrestrial network subject to cellular power and delay constraints in downlink NOMA. Herein, a theoretical insight-based low-complexity iterative solution is provided for optimal power and blocklength allocation to achieve maximum sum-rate. For this purpose, the mixed-integer non-linear problem is formulated and a low-complexity near-optimal solution is proposed. Numerical results show that the proposed scheme achieves a near-optimal solution and outperforms baseline techniques, i.e., the performance gain of 5.18% over the legacy OMA system for NOMA with two IoT devices per subcarrier.
非正交多址(NOMA)是一种很有前途的无线接入技术,可以实现大规模连接并提高频谱效率。空中基站(abs)作为中继的部署也是一个乐观的目标,它可以公平地服务于大量的物联网(IoT)设备。一方面,abs辅助通信为智慧城市中的二级物联网设备提供有效的通信服务。另一方面,NOMA允许多个物联网设备同时获取相同的频率时间资源。为此,加权和速率(WSR)是一个重要的目标,因为它允许在用户公平性和和速率效率之间进行大量权衡。因此,本工作旨在研究受下行链路NOMA中蜂窝功率和延迟约束的综合地空网络的WSR。本文提出了一种基于理论洞察力的低复杂度迭代解决方案,用于优化功率和区块长度分配,以实现最大和速率。为此,构造了混合整数非线性问题,并提出了一个低复杂度的近最优解。数值结果表明,所提出的方案实现了近乎最优的解决方案,并且优于基线技术,即对于每个子载波有两个物联网设备的NOMA,比传统OMA系统的性能提高了5.18%。
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引用次数: 1
SFIOT: Software-Defined Function for the IoT SFIOT:物联网的软件定义功能
Nian Xue, Ji Zhang, Zhen Li, Xianbin Hong, Haijiang Tang, Xin Huang
Wireless reprogramming is a significant yet challenging issue in the Internet of Things (IoT). Existing methods designed for wireless sensor networks (WSN) are inadequate for IoT scenarios and have exposed severe security vulnerabilities. To address this problem, we propose Software-Defined Function (SDF), a secure and wireless reprogramming architecture for IoT named SFIOT. The key is to implement a secure communication interface between the control layer and the infrastructure layer. To this end, a set of security protocols which ensure authentication and confidentiality are designed, and their security is proved theoretically and formally verified. In addition, the constrained capabilities of IoT devices are taken into consideration in our design. We have tested the performance of SDF through a set of experiments and presented a use case on a photovoltaic energy system. The evaluation results show that the proposed protocols can be implemented in real-world IoT applications.
无线重编程是物联网(IoT)中一个重要但具有挑战性的问题。针对无线传感器网络(WSN)设计的现有方法不适合物联网场景,并且暴露出严重的安全漏洞。为了解决这个问题,我们提出了软件定义功能(SDF),一种名为SFIOT的物联网安全无线重编程架构。关键是实现控制层和基础结构层之间的安全通信接口。为此,设计了一套保证认证和保密的安全协议,并对其安全性进行了理论证明和形式化验证。此外,在我们的设计中考虑了物联网设备的受限功能。我们通过一系列实验测试了SDF的性能,并在光伏能源系统上给出了一个用例。评估结果表明,所提出的协议可以在实际物联网应用中实现。
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引用次数: 0
Extending ETSI MEC Towards Stateful Application Relocation Based on Container Migration 将ETSI MEC扩展到基于容器迁移的有状态应用重定位
Francesco Barbarulo, C. Puliafito, A. Virdis, E. Mingozzi
Edge computing allows to run microservices in close proximity to end user devices. This proximity lets edge computing support emerging 5G application scenarios that need low latency and high bandwidth (e.g., augmented reality, autonomous vehicles). Given its interest, edge computing is fastly gaining momentum and is currently being standardised by the European Telecommunications Standards Institute (ETSI) as Multi-Access Edge Computing (MEC). Notwithstanding its strengths, edge computing is significantly challenged by device mobility, as this can reduce proximity to the edge microservice, putting edge computing benefits at risk. A way to solve this problem is to migrate the edge microservice across edge servers, to let it follow the application component running on the mobile device. Besides, if the microservice is stateful (i.e., it maintains a state associated to the user), its state needs to be migrated as well. Within ETSI MEC, this concept is expressed as stateful application relocation. The standard identifies three different high-level ways to transfer the application state. However, all of them assume that it is up to the application to actually relocate the state. In this work, we assume that applications at the edge run as containers, and we extend ETSI MEC to let it support stateful application relocation by leveraging container migration techniques. This approach allows to transfer the application state in a transparent way to the application itself. We implemented our solution and tested it over a small-scale edge computing testbed to extract initial results.
边缘计算允许在靠近终端用户设备的地方运行微服务。这种接近性使边缘计算能够支持需要低延迟和高带宽的新兴5G应用场景(例如增强现实,自动驾驶汽车)。鉴于其兴趣,边缘计算正在迅速获得动力,目前正在被欧洲电信标准协会(ETSI)标准化为多接入边缘计算(MEC)。尽管边缘计算具有优势,但它受到设备移动性的极大挑战,因为这可能会减少与边缘微服务的接近,从而使边缘计算的优势面临风险。解决这个问题的一种方法是跨边缘服务器迁移边缘微服务,让它跟随在移动设备上运行的应用程序组件。此外,如果微服务是有状态的(即,它维护一个与用户相关联的状态),那么它的状态也需要迁移。在ETSI MEC中,这个概念表示为有状态应用程序重定位。该标准确定了三种不同的高级方式来传输应用程序状态。但是,所有这些方法都假定由应用程序来实际重新定位状态。在这项工作中,我们假设边缘的应用程序作为容器运行,并且我们扩展了ETSI MEC,使其通过利用容器迁移技术来支持有状态的应用程序重新定位。这种方法允许以透明的方式向应用程序本身传输应用程序状态。我们实现了我们的解决方案,并在一个小规模的边缘计算测试平台上进行了测试,以提取初始结果。
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引用次数: 5
Message from the Workshop Chairs: SC2 2022 研讨会主席的信息:SC2 2022
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引用次数: 0
Scalable Flow Optimization for Small Satellite Networks using Benders Decomposition 基于Benders分解的小型卫星网络可扩展流优化
Olga Kondrateva, B. Scheuermann, S. Dietzel
Small satellites networks are characterized by intermittent connectivity and rare communication opportunities between satellites and ground stations. To overcome this problem, inter-satellite links can be used and predictability of satellite movements can be exploited to plan the communication in advance. Mathematical optimization techniques are typically applied to create such communication plans. However, the resulting optimization problems are often large and therefore problematic to solve. To handle them more efficiently, we propose a novel decomposition approach based on Benders decomposition. To the best of our knowledge, we are the first to apply Benders decomposition in the context of satellite networks. Our evaluation results show that our approach considerably outperforms the state-of-the-art solution.
小型卫星网络的特点是断断续续的连接,卫星和地面站之间的通信机会很少。为了克服这一问题,可以使用卫星间链路,并利用卫星运动的可预测性来提前规划通信。数学优化技术通常用于创建这样的通信计划。然而,最终的优化问题往往很大,因此很难解决。为了更有效地处理它们,我们提出了一种新的基于Benders分解的分解方法。据我们所知,我们是第一个在卫星网络环境下应用本德斯分解的。我们的评估结果表明,我们的方法大大优于最先进的解决方案。
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引用次数: 0
A Comprehensive Analysis and Performance Enhancements for the IEEE 802.11ay Group Beamforming Protocol IEEE 802.11ay组波束形成协议的综合分析和性能增强
N. Grosheva, Hany Assasa, T. Ropitault, Pablo Jiménez Mateo, Joerg Widmer, N. Golmie
Millimeter-wave technology provides the necessary improvements in capacity and performance for the next generation of wireless networks. The new IEEE 802.11ay amendment extends IEEE 802.11ad to offer 100 Gbit/s connectivity in the unlicensed 60 GHz band through technical advancements such as Multiple-Input and Multiple-Output (MIMO), channel bonding and aggregation. Additionally, it offers improvements to the Beamforming Training (BFT) process in order to increase its efficiency and accuracy. One new technique defined by IEEE 802.11ay is Group Beamforming, which allows to simultaneously train all stations, and significantly reduces training overhead, especially in very dense networks. In this paper, we provide an implementation of IEEE 802.11ay in ns-3 and perform, to the best of our knowledge, the first detailed system-level evaluation of the performance of the novel IEEE 802.11ay protocol. We specifically study the performance of Group Beamforming and compare it against the legacy 802.11ad BFT. We explore how different BFT approaches scale in large networks, identify the possible problems and evaluate at how the BFT process influences the performance of the network overall. Our analysis shows that Group Beamforming can outperform the legacy approach, resulting in lower overhead and improved network performance. However, we also found that the Access Point (AP) training is quite vulnerable to interference in dense networks, introducing severe limitations to the performance, especially in large rooms where precise BFT is crucial to maintain the communication link. Therefore, we propose several improvements to Group Beamforming that improve performance and provide robust beamforming even in very dense scenarios.
毫米波技术为下一代无线网络的容量和性能提供了必要的改进。新的IEEE 802.11ay修正案扩展了IEEE 802.11ad,通过多输入多输出(MIMO)、信道绑定和聚合等技术进步,在未经许可的60 GHz频段提供100 Gbit/s的连接。此外,它提供了改进波束形成训练(BFT)过程,以提高其效率和准确性。IEEE 802.11ay定义的一项新技术是组波束成形,它允许同时训练所有站点,并显着降低训练开销,特别是在非常密集的网络中。在本文中,我们在ns-3中提供了IEEE 802.11ay的实现,并据我们所知,对新型IEEE 802.11ay协议的性能进行了首次详细的系统级评估。我们专门研究了群波束形成的性能,并将其与传统的802.11ad BFT进行了比较。我们探索了不同的BFT方法如何在大型网络中扩展,识别可能存在的问题,并评估了BFT过程如何影响网络的整体性能。我们的分析表明,群波束成形可以优于传统方法,从而降低开销并提高网络性能。然而,我们也发现接入点(AP)训练在密集网络中很容易受到干扰,对性能造成严重限制,特别是在大型房间中,精确的BFT对维持通信链路至关重要。因此,我们提出了对群波束形成的几种改进,以提高性能并在非常密集的情况下提供鲁棒波束形成。
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引用次数: 1
A Measurement Study of TCP Performance over 60GHz mmWave Hybrid Networks 60GHz毫米波混合网络中TCP性能的测量研究
Wanghong Yang, Xu Zhou, Wenji Du, Jianan Sun, Yongmao Ren, Gaogang Xie
The millimeter wave technology which provides the throughput of multi-gigabit per second is one of the key technologies for 5G/B5G communications. However, an optimal interaction between the transport layer protocols and the highly fluctuating millimeter wave networks is extremely challenging and lacks in-depth exploration in actual networks. In this paper, we examine and discuss the performance of several TCP congestion control algorithms in the real 60 GHz millimeter wave environment, and inspect the improvement of TCP performance over mmWave hybrid networks by TCP proxies in single-flow and multi-flows scenarios. Our results reveal severe adaptation problems associated with these congestion control algorithms over millimeter wave networks and the effectiveness of TCP proxies for the utilization of millimeter wave hybrid networks.
毫米波技术是实现5G/B5G通信的关键技术之一,其吞吐量可达每秒千兆位。然而,传输层协议与高度波动的毫米波网络之间的最佳交互是极具挑战性的,在实际网络中缺乏深入的探索。本文研究并讨论了几种TCP拥塞控制算法在真实60ghz毫米波环境下的性能,并考察了在单流和多流场景下TCP代理对毫米波混合网络中TCP性能的改善。我们的研究结果揭示了这些拥塞控制算法在毫米波网络上的严重适应问题,以及TCP代理对毫米波混合网络利用的有效性。
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引用次数: 1
Collision-free swarm take-off based on trajectory analysis and UAV grouping 基于轨迹分析和无人机分组的无碰撞群起飞
Carles Sastre, J. Wubben, C. Calafate, Juan-Carlos Cano, P. Manzoni
In recent years, the adoption of unmanned aerial vehicles (UAVs) has widely spread to different sectors worldwide. Technological advances in this field have made it possible to coordinate the flight of these aircraft so as to conform a swarm. A UAV swarm is defined as a group of UAVs working collaboratively to carry out more complex missions or perform tasks more efficiently. Common applications of these swarms include rescue missions, precision agriculture, and border control, among others. However, there are still certain problems that prevent us from ensuring the success of their mission, especially as the number of drones in a swarm increases. In this paper, we specifically address the problem of a swarm take-off by optimizing the total time involved, while guaranteeing the safety of the UAVs during the take-off stage. To this end, we propose a new approach that combines a collision detection algorithm based on trajectory analysis with a batch generation mechanism that we use in order to determine the take-off sequence. Experiments show that our algorithm offers an efficient solution, managing to improve the performance of existing take-off techniques.
近年来,无人驾驶飞行器(uav)在世界范围内广泛应用于不同领域。这一领域的技术进步使得协调这些飞机的飞行从而形成一个集群成为可能。无人机群被定义为一组协同工作的无人机,以执行更复杂的任务或更有效地执行任务。这些蜂群的常见应用包括救援任务、精准农业和边境控制等。然而,仍然有一些问题阻碍我们确保他们的任务的成功,特别是随着无人机数量的增加。本文在保证无人机起飞阶段安全的前提下,通过优化总时间,具体解决了蜂群起飞问题。为此,我们提出了一种新的方法,该方法将基于轨迹分析的碰撞检测算法与我们用于确定起飞顺序的批生成机制相结合。实验表明,该算法提供了一种有效的解决方案,能够提高现有起飞技术的性能。
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引用次数: 1
Co-simulated Digital Twin on the Network Edge: the case of platooning 网络边缘上的联合模拟数字孪生:以队列为例
Maurizio Palmieri, C. Quadri, A. Fagiolini, G. P. Rossi, C. Bernardeschi
This paper presents an approach to create high fidelity Digital-Twin models for distributed multi-agent cyber-physical systems based on the combination of simulating components, generated from different modeling languages, each tailored for the specific domain of the subsystem. The approach specifically addresses the wireless communication domain, exploiting a Python module as a simulating component to evaluate the impact of network delay among the distributed elements of the system under analysis. A case study with a platoon of four vehicles following a leading car, all modeled in Simulink, is used to show the applicability of the approach, allowing the comparison between a Vehicle-to-Vehicle communication against a centralized multi-access edge computing paradigm.
本文提出了一种为分布式多智能体网络物理系统创建高保真数字孪生模型的方法,该方法基于由不同建模语言生成的仿真组件的组合,每种建模语言都针对子系统的特定领域进行了定制。该方法专门针对无线通信领域,利用Python模块作为模拟组件来评估被分析系统的分布式元素之间网络延迟的影响。一个案例研究中,四辆车跟随一辆领先的汽车,全部在Simulink中建模,用于展示该方法的适用性,允许比较车对车通信与集中式多访问边缘计算范例。
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引用次数: 0
WIP: Impulsive Noise Source Recognition with OFDM-WiFi Signals Based on Channel State Information Using Machine Learning 基于信道状态信息的OFDM-WiFi信号脉冲噪声源识别
I. Landa, Guillermo Díaz, I. Sobrón, I. Eizmendi, M. Vélez
This study presents contributions on the detection of impulsive noise sources using OFDM-Wifi signals and Machine Learning models. The influence of impulsive noise sources on WiFi signals is used to obtain the features for supervised Machine learning models. A measurement campaign has been carried out at two indoor locations, using the Atheros CSI tool to obtain the channel state information. Feature extraction for impulsive noise detection has been performed by processing the amplitude of the channel state information of each subcarrier. These features have fed two supervised Machine Learning models, a Random Forest algorithm, and a higher level algorithm such as a Deep Neural Network. The results obtained indicate that Wifi-OFDM signals can be used for impulsive noise source recognition. The main contributions of this work focus on the extraction of suitable features for the identification of impulsive noise sources through machine learning models. The accuracy greater than 0.9 in source identification validates the proposed model, which serves as a precedent for future studies in this area.
本研究在使用OFDM-Wifi信号和机器学习模型检测脉冲噪声源方面做出了贡献。利用脉冲噪声源对WiFi信号的影响来获取有监督机器学习模型的特征。在两个室内位置进行了测量活动,使用Atheros CSI工具获得通道状态信息。通过处理每个子载波的信道状态信息的幅值,实现了脉冲噪声检测的特征提取。这些特征提供了两个监督机器学习模型,一个随机森林算法和一个更高级别的算法,如深度神经网络。结果表明,Wifi-OFDM信号可以用于脉冲噪声源识别。这项工作的主要贡献集中在通过机器学习模型提取合适的特征来识别脉冲噪声源。源识别精度大于0.9,验证了模型的有效性,为今后的研究提供了一个先例。
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引用次数: 1
期刊
2022 IEEE 23rd International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM)
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