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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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WIP: When RDMA Meets Wireless WIP:当RDMA遇到无线
Tong Li, Ke Xu, H. Huang, Xinle Du, Kai Zheng
The emerging applications including AR/VR inter-active gaming, ultra-high-definition live streaming, 4K wireless projection, Metaverse, etc. imply the demand for ultra-low latency and ultra-high bandwidth wireless transmission. The legacy kernel TCP stack is not fully satisfactory because it induces the CPU bottleneck on hosts. In this paper, we propose Wireless-RDMA (W-RDMA) that enables RDMA in wireless networks to tackle the CPU bottleneck issue on wireless hosts. The feasibility of W-RDMA is demonstrated through testbed experiments. Technical challenges and future opportunities are further discussed. We believe it is a small but crucial step for enabling RDMA for wireless transmission.
AR/VR互动游戏、超高清直播、4K无线投影、超视界等新兴应用意味着对超低延迟、超高带宽无线传输的需求。遗留的内核TCP堆栈并不完全令人满意,因为它会在主机上引起CPU瓶颈。在本文中,我们提出无线RDMA (W-RDMA),使无线网络中的RDMA能够解决无线主机上的CPU瓶颈问题。通过试验台实验验证了W-RDMA的可行性。进一步讨论了技术挑战和未来机遇。我们相信,这是实现RDMA无线传输的一个小而关键的步骤。
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引用次数: 1
Relay selection in Bluetooth Mesh networks by embedding genetic algorithms in a Digital Communication Twin 嵌入遗传算法的蓝牙Mesh网络中继选择
Jorg Wieme, Mathias Baert, J. Hoebeke
Bluetooth Mesh (BM) technology is a suitable candidate to realize mesh networks leveraging on a mains-powered backbone. However, the flooding-based technology requires additional management in order to operate efficiently. Consequently, it offers a diverse set of configuration options to control network behavior, including the selection of relays in the backbone that rebroadcast packets further into the network. In the past, Digital Twin technology has been applied to design a Digital Communication Twin (DCT) of a BM network. The DCT (or Digital Twin Network, DTN) can be used to find an optimal network configuration for given application requirements. This includes a relay selection approach that finds a set of relays to assure sufficient path redundancy in the network. However, existing results prove that this approach can be improved in terms of computation time, flexibility and validity of the proposed set of relays. In this paper, we present a reinterpreted version of a genetic algorithm to tackle this issue. The results show it achieves better results on all three improvement targets, compared to the original approach. Furthermore, it showcases the flexibility and adaptability of the DCT whilst adequately improving the relay selection approach.
蓝牙Mesh (Bluetooth Mesh, BM)技术是利用主干网实现Mesh网络的合适选择。然而,基于洪水的技术需要额外的管理才能有效运行。因此,它提供了一组不同的配置选项来控制网络行为,包括骨干网中中继的选择,这些中继将数据包重新广播到网络中。在过去,数字孪生技术已被应用于BM网络的数字通信孪生(DCT)设计。DCT(或数字孪生网络,DTN)可用于为给定的应用需求找到最佳的网络配置。这包括一种中继选择方法,它可以找到一组中继,以确保网络中有足够的路径冗余。然而,已有的结果证明,该方法在计算时间、灵活性和所提出的继电器集的有效性方面可以得到改进。在本文中,我们提出了一个重新解释版本的遗传算法来解决这个问题。结果表明,与原始方法相比,该方法在所有三个改进目标上都取得了更好的结果。此外,它展示了DCT的灵活性和适应性,同时充分改进了继电器选择方法。
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引用次数: 1
Mobility Management in Industrial IoT Environments 工业物联网环境中的移动性管理
Marco Pettorali, F. Righetti, C. Vallati, Sajal K. Das, G. Anastasi
The Internet Engineering Task Force (IETF) has defined the 6TiSCH architecture to enable the Industrial Inter-net of Things (IIoT). Unfortunately, 6TiSCH does not provide mechanisms to manage node mobility, while many industrial applications involve mobile devices (e.g., mobile robots or wearable devices carried by workers). In this paper, we consider the Synchronized Single-hop Multiple Gateway framework to manage mobility in 6TiSCH networks. For this framework, we address the problem of positioning Border Routers in a deployment area, which is similar to the "Art Gallery" problem, proposing an efficient deployment policy for Border Routers based on geometrical rules. Moreover, we define a flexible Scheduling Function that can be easily adapted to meet the requirements of various IIoT applications. We analyze the considered Scheduling Function in different scenarios with varying traffic patterns, and define an algorithm for sizing the system in such a way to guarantee the application requirements. Finally, we investigate the impact of mobility on the performance of the system. Our results show that the proposed solutions allow to manage node mobility very effectively, and without significant impact on the performance.
互联网工程任务组(IETF)定义了6TiSCH架构,以实现工业物联网(IIoT)。不幸的是,6TiSCH没有提供管理节点移动性的机制,而许多工业应用涉及移动设备(例如,移动机器人或工人携带的可穿戴设备)。在本文中,我们考虑了同步单跳多网关框架来管理6TiSCH网络的移动性。对于这个框架,我们解决了边界路由器在部署区域的定位问题,这类似于“美术馆”问题,提出了一种基于几何规则的边界路由器的有效部署策略。此外,我们定义了一个灵活的调度功能,可以很容易地适应各种工业物联网应用的需求。分析了不同流量模式下的调度功能,并定义了一种算法来对系统进行分级,以保证应用需求。最后,我们研究了移动性对系统性能的影响。我们的结果表明,所提出的解决方案允许非常有效地管理节点移动性,并且不会对性能产生重大影响。
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引用次数: 1
Network Digital Twin for the Industrial Internet of Things 工业物联网的网络数字孪生
Mehdi Kherbache, M. Maimour, É. Rondeau
Digital Twins are starting to revolutionize many industries in the last decade providing a plethora of benefits to optimize the performance of industrial systems. They aim to create a continuously synchronized model of the physical system which enables rapid adaptation to dynamics, mainly unpredicted and undesirable changes. A wide range of industrial fields have already benefited from digital twins technology such as aerospace, manufacturing, healthcare, city management and maritime and shipping. Furthermore, recent research works are starting to study the integration of digital twins for computer networks to allow more innovation and intelligent management. One of the basic building blocks of digital twins technology is the Internet of Things where wireless sensors and actuators are deployed to ensure the interaction between the physical and digital worlds. This type of network is complex to manage due to its severe constraints especially when it controls critical industrial applications, resulting in the Industrial Internet of Things (IIoT). We believe that the optimization of the IIoT will lead to efficient integration of Digital Twins in Industry 4.0. In this paper, we design a Network Digital Twin for the IIoT where sensors, actuators and communication infrastructure are replicated in the digital twin to enable intelligent real-time management of such networks. This way, new networking services such as predictive maintenance, network diagnosis, resource allocation, energy optimization with other intelligent services can be efficiently integrated and exploited in the network life-cycle. We validate the proposed architecture by providing a promising prototype implementation that should unleash the full potential of the network digital twin.
在过去的十年中,数字双胞胎开始给许多行业带来革命性的变化,为优化工业系统的性能提供了大量的好处。他们的目标是创建一个连续同步的物理系统模型,使其能够快速适应动态,主要是不可预测和不希望发生的变化。广泛的工业领域已经从数字孪生技术中受益,如航空航天、制造业、医疗保健、城市管理、海事和航运。此外,最近的研究工作正在开始研究计算机网络的数字双胞胎集成,以允许更多的创新和智能管理。数字孪生技术的基本组成部分之一是物联网,其中部署了无线传感器和执行器,以确保物理世界和数字世界之间的交互。由于其严格的限制,这种类型的网络管理起来很复杂,特别是当它控制关键的工业应用时,导致了工业物联网(IIoT)。我们相信,工业物联网的优化将导致工业4.0中数字孪生的高效融合。在本文中,我们为工业物联网设计了一个网络数字孪生,其中传感器,执行器和通信基础设施在数字孪生中复制,以实现对此类网络的智能实时管理。从而在网络生命周期内,将预测性维护、网络诊断、资源分配、能源优化等新型网络服务与其他智能服务高效融合和利用。我们通过提供一个有前途的原型实现来验证所提议的架构,该原型实现应该释放网络数字孪生的全部潜力。
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引用次数: 6
Joint Orchestration of Content-Based Message Management and Traffic Flow Steering in Industrial Backbones 工业骨干网中基于内容的消息管理与流量导向的联合编排
Mattia Fogli, Carlo Giannelli, C. Stefanelli
The industrial internet of things has radically modified industrial environments, not only enabling novel services but also dramatically increasing the amount of generated traffic. Nowadays, a major concern within industrial plants is to support network-intensive services, such as real-time remote vibration monitoring of autonomous guided vehicles, while ensuring the prompt and reliable delivery of mission-critical safety-related messages among machines and the control room. To this purpose, we present a novel solution jointly orchestrating content-based message management and traffic flow steering: the former enables edge-powered in-network processing modules to process packet payloads as they traverse the industrial backbone, the latter supports dynamic (re)routing of traffic flows towards such processing modules. In particular, we exploit software-defined networking for flexible traffic flow (re)routing and Kubernetes for dynamic deployment on edge nodes of in-network processing modules for content-based message management. As demonstrated by performance results based on our working proof-of-concept prototype, our solution efficiently allows to manage industrial traffic flows in a coordinated fashion, by considering requirements of concurrently running industrial applications and the current state of the overall topology.
工业物联网从根本上改变了工业环境,不仅实现了新颖的服务,而且大大增加了产生的流量。如今,工业工厂内的一个主要问题是支持网络密集型服务,例如自动引导车辆的实时远程振动监测,同时确保在机器和控制室之间及时可靠地传递关键任务安全相关信息。为此,我们提出了一种新颖的解决方案,联合编排基于内容的消息管理和流量控制:前者使边缘供电的网络内处理模块能够在数据包有效负载穿越工业骨干时处理它们,后者支持流量流向这些处理模块的动态(重新)路由。特别是,我们利用软件定义网络实现灵活的流量(重)路由,并利用Kubernetes在基于内容的消息管理的网络内处理模块的边缘节点上动态部署。正如基于我们的工作概念验证原型的性能结果所证明的那样,通过考虑并发运行的工业应用程序的需求和整体拓扑的当前状态,我们的解决方案有效地允许以协调的方式管理工业流量。
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引用次数: 0
WoTwins: Automatic Digital Twin Generator for the Web of Things WoTwins:物联网的自动数字双胞胎发生器
L. Sciullo, A. Trotta, Federico Montori, L. Bononi, M. D. Felice
Digital Twins are crucial in Industry 4.0 IoT scenarios, as they replicate physical assets and enable important tasks such as predictive analytics, what-if scenarios and real time monitoring. The heterogeneity of IoT use cases usually makes the development of digital twins extremely application-specific as well as prone to interoperability issues. To overcome these two challenges, we propose WoTwins, a framework that, on one side, leverages the W3C Web of Things (WoT) standard to model data and entities, and, on the other side, generates automatically Digital Twins of existing Web Things by modeling their state space through a Markov Decision Process (MDP) graph and by predicting its behavior though Machine Learning techniques. We conduct experiments on a simulated use cases related to IoT robotics to evaluate our proposal.
数字孪生在工业4.0物联网场景中至关重要,因为它们可以复制物理资产并实现预测分析、假设场景和实时监控等重要任务。物联网用例的异质性通常使得数字孪生的开发非常特定于应用程序,并且容易出现互操作性问题。为了克服这两个挑战,我们提出了WoTwins,这是一个框架,一方面利用W3C物联网(WoT)标准对数据和实体进行建模,另一方面,通过马尔可夫决策过程(MDP)图对现有物联网的状态空间进行建模,并通过机器学习技术预测其行为,从而自动生成现有物联网的数字双胞胎。我们对与物联网机器人相关的模拟用例进行了实验,以评估我们的提案。
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引用次数: 3
Joint Terahertz Communication and Atmospheric Sensing in Low Earth Orbit Satellite Networks: Physical Layer Design 低地球轨道卫星网络中联合太赫兹通信和大气传感:物理层设计
Sergio Aliaga, Ali J. Alqaraghuli, J. Jornet
As the interest in the Terahertz (0.1-1THz) band grows with the technological advancements that enable communication at higher data rates, the existing use for THz-based sensing systems motivate exploration of Joint Communication and Sensing systems (JCS). Such systems can be used for the next generation of satellite constellations for the purposes of internet-backhauling, while performing scientific functions such as studying atmospheric gases. The fact that the hardware employed for both applications is highly similar, if not identical, opens the possibility of designing a new waveform that can jointly communicate and sense at the same time. In this paper, we explore Differential Absorption Radars (DAR), traditionally used for weather sensing, as a potential candidate to be operated in combination with a Chirp Spread Spectrum (CSS) modulation. We present a scenario with a satellite at Low Earth Orbit (LEO) where the CSS modulation could outperform traditional PSK modulations while making it possible to retrieve water vapor density profiles of the atmosphere with DAR. Performance of both communication and remote sensing applications are studied through simulation.
随着技术的进步,人们对太赫兹(0.1-1THz)频段的兴趣不断增长,使通信能够以更高的数据速率进行,基于太赫兹的传感系统的现有使用激发了联合通信和传感系统(JCS)的探索。这种系统可以用于下一代卫星星座,用于互联网回传,同时执行研究大气气体等科学功能。事实上,这两种应用所采用的硬件即使不完全相同,也是高度相似的,这为设计一种可以同时进行通信和感知的新波形提供了可能性。在本文中,我们探讨了差分吸收雷达(DAR),传统上用于天气传感,作为与啁啾扩频(CSS)调制相结合的潜在候选者。我们提出了一个低地球轨道卫星的场景,其中CSS调制可以优于传统的PSK调制,同时可以通过DAR检索大气的水蒸气密度分布。通过仿真研究了通信和遥感应用的性能。
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引用次数: 7
Three-dimensional Stable Task Assignment in Semi-opportunistic Mobile Crowdsensing 半机会移动众测中的三维稳定任务分配
F. Yucel, E. Bulut
In semi-opportunistic mobile crowdsensing (SO-MCS), workers are asked to provide the matching platform with multiple paths they find acceptable between their starting locations and destinations in order to alleviate the problem of poor coverage in opportunistic MCS without forcing them to take potentially much costly and hence undesirable paths as in participatory MCS. While these alternative paths open up new assignment possibilities between workers and tasks, they also make it more challenging to find a stable or preference-aware task assignment (TA), as they bring a new dimension to the TA problem (i.e., workers/paths/tasks instead of workers/tasks as in previous work), and introduce complex requirements to achieve stability by satisfying user preferences. In this paper, we formally define the stability conditions for three-dimensional task assignments in SO-MCS, and propose two polynomial-time TA algorithms: an exact algorithm for SO-MCS systems with uniform worker qualities, and a c-approximate algorithm for general SO-MCS systems, where c is the number of the acceptable paths of the worker with the largest set of acceptable paths. Through extensive simulations, we demonstrate that the proposed algorithms significantly outperform the state-of-the-art TA algorithms in terms of stability (or user happiness) in most scenarios.
在半机会主义移动众感(SO-MCS)中,工作人员被要求为匹配平台提供他们认为从起点到目的地之间可接受的多条路径,以缓解机会主义MCS中覆盖率低的问题,而不会迫使他们采取参与式MCS中可能非常昂贵且因此不受欢迎的路径。虽然这些替代路径在工人和任务之间开辟了新的分配可能性,但它们也使找到稳定或偏好感知的任务分配(TA)变得更具挑战性,因为它们为TA问题带来了新的维度(即工人/路径/任务,而不是像以前的工作那样的工人/任务),并引入了复杂的需求,以通过满足用户偏好来实现稳定性。本文正式定义了SO-MCS中三维任务分配的稳定性条件,并提出了两种多项式时间的TA算法:一种是针对具有均匀工人素质的SO-MCS系统的精确算法,一种是针对一般SO-MCS系统的c-近似算法,其中c为具有最大可接受路径集的工人的可接受路径数。通过广泛的模拟,我们证明了在大多数情况下,所提出的算法在稳定性(或用户满意度)方面明显优于最先进的TA算法。
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引用次数: 1
Reviewers: SC2 2022 审稿人:SC2 2022
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引用次数: 0
DTCPN: A Digital Twin Cyber Platform Based on NFV DTCPN:基于NFV的数字孪生网络平台
Xiulei Wang, Yan Gao, Li Deng, Ming Chen
Existing network emulation or simulation platforms provide efficient way to analyze, test and evaluate new network technology and equipment. However, these platforms have disadvantages such as poor interactivity, model sensitive and low reality. To solve these problems, a Digital Twin Cyber Platform based on NFV (DTCPN) is proposed in this paper. Firstly, by analyzing the function principles of digital twin and NFV technology, a system model which combines the advantages of digital twin and NFV is proposed. Secondly, the working principle and advantages of DTCPN are presented. Thirdly, the prototype of DTCPN is designed and typical applications of DTCPN in network security, network management and network applications are presented. The evaluation results show that DTCPN works in a way free from network modeling and provide an easy interaction and high reality technology for network innovations.
现有的网络仿真或仿真平台为分析、测试和评估新的网络技术和设备提供了有效的途径。然而,这些平台存在交互性差、模型敏感性低、真实感低等缺点。为了解决这些问题,本文提出了一种基于NFV的数字孪生网络平台(DTCPN)。首先,通过分析数字孪生和NFV技术的功能原理,提出了一种结合数字孪生和NFV优势的系统模型。其次,介绍了DTCPN的工作原理和优点。第三,设计了DTCPN的原型,介绍了DTCPN在网络安全、网络管理和网络应用方面的典型应用。评估结果表明,DTCPN的工作方式不需要网络建模,为网络创新提供了一种简单的交互和高真实感技术。
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引用次数: 2
期刊
2022 IEEE 23rd International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM)
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