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WebAssembly for Edge Computing: Potential and Challenges 面向边缘计算的WebAssembly:潜力与挑战
Q1 Social Sciences Pub Date : 2022-12-01 DOI: 10.1109/MCOMSTD.0001.2000068
M. N. Hoque, Khaled A. Harras
Latency and privacy concerns, together with the spread of smart/IoT devices, have recently sparked interest in computational offloading to the edge. Portability and migratability are important requirements to achieve a stable edge-offloading platform. To that end, code compatibility is one of the core challenges toward achieving these goals due to the inherent heterogeneity of edge devices. In this article, we first examine existing edge-computing technologies, how they achieve portability and migratability, and the advantag-es and limitations, via experimentation, of each method. We then explore leveraging WebAssem-bly for edge computing. We present an overview of this rising technology, assess its performance, and discuss its potential compared to other solutions for edge offloading. In the end, we outline four potential methods to achieve migratability with WebAssembly and the trade-offs and costs of deployment for each method.
延迟和隐私问题,加上智能/物联网设备的普及,最近引发了人们对边缘计算卸载的兴趣。可移植性和可迁移性是实现稳定边缘卸载平台的重要要求。为此,由于边缘设备固有的异构性,代码兼容性是实现这些目标的核心挑战之一。在本文中,我们首先通过实验研究了现有的边缘计算技术,它们是如何实现可移植性和可迁移性的,以及每种方法的优点和局限性。然后,我们探索利用WebAssembly进行边缘计算。我们概述了这项新兴技术,评估了其性能,并讨论了与其他边缘卸载解决方案相比的潜力。最后,我们概述了使用WebAssembly实现可迁移性的四种潜在方法,以及每种方法的部署权衡和成本。
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引用次数: 3
WiFi TSN: Enabling Deterministic Wireless Connectivity over 802.11 WiFi TSN:通过802.11实现确定性无线连接
Q1 Social Sciences Pub Date : 2022-12-01 DOI: 10.1109/MCOMSTD.0002.2200039
D. Cavalcanti, C. Cordeiro, Malcolm Smith, A. Regev
New applications are emerging that bring new and stricter requirements for WiFi. Smart factories, mobile and collaborative robots, and Extended Reality (XR) demand deterministic wireless connectivity with ultra-low latency. This article focuses on the challenges and enhancements supporting Time-Sensitive Networking (TSN) that enable WiFi to support usages that require deterministic operation. The article reviews existing and future time-sensitive applications and their connectivity requirements. It discusses the evolution of the TSN capabilities supported by various WiFi generations, from legacy standards to the latest 802.11ax specification and the ongoing progress in the 802.11be Task Group specific to deterministic operation. The article also discusses the open challenges for next generation WiFi, including ultra-low latency (sub-millisecond) with higher efficiency. The article concludes with a review of the TSN ecosystem activities toward interoperability testing and certification of WiFi TSN and discusses testbed results demonstrating the 802.11ax and 802.11be tools to achieve deterministic operation.
新的应用程序正在出现,对WiFi提出了新的更严格的要求。智能工厂、移动和协作机器人以及扩展现实(XR)需要具有超低延迟的确定性无线连接。本文重点介绍支持时间敏感网络(TSN)的挑战和增强功能,这些功能使WiFi能够支持需要确定性操作的用途。本文回顾了现有和未来的时间敏感应用程序及其连接需求。它讨论了不同WiFi代支持的TSN功能的演变,从传统标准到最新的802.11ax规范,以及802.11be任务组中特定于确定性操作的持续进展。文章还讨论了下一代WiFi面临的开放挑战,包括更高效率的超低延迟(亚毫秒)。文章最后回顾了TSN生态系统在WiFi TSN互操作性测试和认证方面的活动,并讨论了证明802.11ax和802.11be工具实现确定性操作的测试台结果。
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引用次数: 5
Introduction to Time-Sensitive Networking 时间敏感网络简介
Q1 Social Sciences Pub Date : 2022-12-01 DOI: 10.1109/MCOMSTD.0004.2200046
N. Finn
Since the year 2000, a number of companies and standards development organizations have been producing products and standards for Time-Sensitive Networking to support real-time applications that require zero packet loss due to buffer congestion, extremely low packet loss due to equipment failure, and guaranteed upper bounds on end-to-end latency. Often, a robust capability for time synchronization to less than 1 s is also required. These networks consist of specially-featured bridges that are interconnected using standard Ethernet links with standard MAC/PHY layers. Since the year 2012, this technology has advanced to the use of routers, as well as bridges, and features of interest to Time-Sensitive Net-working have been added to both Ethernet and wireless standards. Since the year 2018, TSN standardization has been expanding to include more queuing and pacing technologies, and to support new markets, such as industrial, automotive, aviation, and service provider applications.
自2000年以来,许多公司和标准开发组织一直在为时间敏感网络生产产品和标准,以支持实时应用程序,这些应用程序需要由于缓冲区拥塞而导致的零数据包丢失,由于设备故障导致的极低数据包丢失,并保证端到端延迟的上限。通常,还需要将时间同步到小于1秒的强大功能。这些网络由特殊功能的网桥组成,这些网桥使用带有标准MAC/PHY层的标准以太网链路相互连接。自2012年以来,这项技术已经发展到使用路由器和网桥,并且时间敏感网络感兴趣的功能已经添加到以太网和无线标准中。自2018年以来,TSN标准化一直在扩展,包括更多的排队和步调技术,并支持工业,汽车,航空和服务提供商应用等新市场。
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引用次数: 127
Series Editorial: Wireless and Radio Communications 系列社论:无线和无线电通信
Q1 Social Sciences Pub Date : 2022-12-01 DOI: 10.1109/mcomstd.2022.10034494
T. Cooklev, Leif R. Wilhelmsson, Peiying Zhu
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引用次数: 0
Architecture, Protocols, and Algorithms for Location-Aware Services in Beyond 5G Networks 超5G网络中位置感知服务的体系结构、协议和算法
Q1 Social Sciences Pub Date : 2022-11-27 DOI: 10.1109/MCOMSTD.0001.2100074
P. Hammarberg, Julia Vinogradova, Gábor Fodor, Ritesh Shreevastav, S. Dwivedi, F. Gunnarsson
The automotive and railway industries are rapidly transforming with a strong drive toward automation and digitalization, with the goal of increased convenience, safety, efficiency, and sustainability. Since assisted and fully automated automotive and train transport services increasingly rely on vehicle-to-everything communications and high-accuracy real-time positioning, it is necessary to continuously maintain high-accuracy localization, even in occlusion scenes such as tunnels, urban canyons, or areas covered by dense foliage. In this article, we review the 5G positioning framework of the 3rd Generation Partnership Project in terms of methods and architecture and propose enhancements to meet the stringent requirements imposed by the transport industry. In particular, we highlight the benefit of fusing cellular and sensor measurements, and discuss required architecture and protocol support for achieving this at the network side. We also propose a positioning framework to fuse cellular network measurements with measurements by onboard sensors. We illustrate the viability of the proposed fusion-based positioning approach using a numerical example.
汽车和铁路行业正在迅速转型,大力推动自动化和数字化,目标是提高便利性、安全性、效率和可持续性。由于辅助和全自动化的汽车和火车运输服务越来越依赖于车到物的通信和高精度实时定位,因此有必要持续保持高精度定位,即使在隧道、城市峡谷或茂密树叶覆盖的区域等遮挡场景中也是如此。在本文中,我们从方法和架构方面回顾了第三代合作伙伴项目的5G定位框架,并提出了增强措施,以满足运输行业的严格要求。特别是,我们强调了融合蜂窝和传感器测量的好处,并讨论了在网络端实现这一点所需的架构和协议支持。我们还提出了一种定位框架,将蜂窝网络测量与机载传感器的测量相融合。我们通过一个数值例子说明了所提出的基于融合的定位方法的可行性。
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引用次数: 3
A New Agent-Based Intelligent Network Architecture 一种新的基于Agent的智能网络体系结构
Q1 Social Sciences Pub Date : 2022-11-03 DOI: 10.1109/MCOMSTD.0001.2100053
S. T. Arzo, Domenico Scotece, R. Bassoli, F. Granelli, L. Foschini, F. Fitzek
The advent of 5G and the design of its architecture has become possible because of the previous individual scientific works and standardization efforts on cloud computing and network softwarization. Software-defined networking and network function virtualization started separately to find their convolution into 5G network architecture. Also, the ongoing design of the future beyond 5G (B5G) and 6G network architecture cannot overlook the pivotal inputs of different independent standardization efforts on autonomic networking, service-based communication systems, and multi-access edge computing. This article provides the design and characteristics of an agent-based, softwarized, and intelligent architecture, which coherently condenses and merges the independent proposed architectural works by different standardization working groups and bodies. This novel work is a helpful means for the design and standardization process of the future 5G and 6G network architecture.
5G的出现及其架构的设计之所以成为可能,是因为之前在云计算和网络软件化方面的个人科学工作和标准化努力。软件定义网络和网络功能虚拟化分别开始寻找它们在5G网络架构中的卷积。此外,正在进行的超越5G (B5G)和6G网络架构的未来设计不能忽视自主网络、基于服务的通信系统和多接入边缘计算的不同独立标准化工作的关键输入。本文提供了一个基于代理的、软件化的、智能的体系结构的设计和特点,该体系结构可以连贯地浓缩和合并不同标准化工作组和机构提出的独立的体系结构作品。这项新颖的工作对未来5G和6G网络架构的设计和标准化进程具有重要意义。
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引用次数: 1
Configured Grant for Ultra-Reliable and Low-Latency Communications: Standardization and Beyond 超可靠和低延迟通信的配置授权:标准化和超越
Q1 Social Sciences Pub Date : 2022-10-17 DOI: 10.1109/MCOMSTD.0001.2000076
Majid Gerami, Bikramjit Singh
Uplink configured Grant allocation has been introduced in Third Generation Partnership Project New Radio Release 15. This is beneficial in supporting Ultra-Reliable and Low-Latency Communication for industrial communication, a key Fifth Generation mobile communication usage scenario. This scheduling mechanism enables a user with periodic traffic to transmit its data readily and bypass the control signaling entailed to scheduling requests and scheduling grants and provides low latency access. To facilitate ultra-reliable communication, the scheduling mechanism can allow users to transmit consecutive redundant transmissions in a predefined period. However, if the traffic is semi-deterministic, the current standardized configured grant allocation is not equipped to emulate the traffic as the configured grant's period is preconfigured and fixed. This article describes the recent advancements in the standardization process in Release 15 and 16 for configured grant allocation and the prospective solutions to accommodate semi-deterministic traffic behavior for configured grant allocations.
在第三代合作伙伴计划新无线电版本15中引入了上行配置拨款分配。这有利于支持工业通信的超可靠和低延迟通信,这是第五代移动通信的关键使用场景。这种调度机制使具有周期性流量的用户能够轻松地传输其数据,并绕过调度请求和调度授权所需的控制信令,并提供低延迟访问。为了实现超可靠的通信,调度机制可以允许用户在预定义的时间段内连续发送冗余传输。但是,如果流量是半确定性的,则当前标准化配置的授权分配不能模拟流量,因为配置的授权周期是预先配置和固定的。本文描述了第15版和第16版中针对已配置授权分配的标准化过程的最新进展,以及为已配置授权分配提供半确定性流量行为的预期解决方案。
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引用次数: 3
Analysis of Multilink in IEEE 802.11be IEEE 802.11be中的多链路分析
Q1 Social Sciences Pub Date : 2022-09-01 DOI: 10.1109/MCOMSTD.0001.2100086
Shubhodeep Adhikari, S. Verma
Multilink (ML) is a key feature in 802.11be, the latest amendment of 802.11 (commonly known as WiFi). It allows an 802.11 device to transmit and receive data on more than one dynamically selected links, the selection of links being based on the instantaneous availability of links, their interference profile, supported data rates, etc. ML is expected to significantly improve both throughput and latency in 802.11, not only in congestion-free channels but also in moderate to heavily congested channels. This article begins by providing an overview of ML in 802.11be, including the different variants of ML. Next, it discusses the expected performance of the variants of ML relative to legacy 802.11. Finally, it analyzes simulation-based evaluations of ML across a range of link configurations and environments.
多链路(ML)是802.11(通常称为WiFi)的最新修订版802.11be中的一个关键功能。它允许802.11设备在不止一个动态选择的链路上发送和接收数据,链路的选择基于链路的瞬时可用性、它们的干扰状况、支持的数据速率等。ML有望显著提高802.11中的吞吐量和延迟,不仅在无拥塞信道中,而且在中度到重度拥塞信道中。本文首先概述了802.11be中的ML,包括ML的不同变体。接下来,讨论了ML变体相对于传统802.11的预期性能。最后,它分析了一系列链路配置和环境中基于模拟的ML评估。
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引用次数: 1
An Energy-Efficient Smart Building System using Autonomous Networks 一种使用自主网络的节能智能建筑系统
Q1 Social Sciences Pub Date : 2022-09-01 DOI: 10.1109/MCOMSTD.0001.2200021
Preti Kumari, Hari Prabhat Gupta
A sensing system is an emerging paradigm for making smart buildings. The system's success depends on correctly communicating the sensing information from a building to the end-user within the given constraints. An autonomous network can maintain and reconfigure itself in a dynamic environment without human intervention. A sensing system using an autonomous network takes decision based on the current scenario and makes the system smarter. In this article, we propose an energy-efficient smart building system. The system uses the LoRa protocol for communicating the information. The system consists of compression-decompression and autonomous network models for reducing the size of the sensing information and automatically selects the suitable compression ratio of the sensing information that can be communicated to the operator with the given constraints. Our results demonstrate the impact of the proposed compression-decompression and autonomous network models on the system's delay, energy consumption, and accuracy.
传感系统是制造智能建筑的新兴范例。该系统的成功取决于在给定的约束条件下,将传感信息从建筑物正确地传递给最终用户。自主网络可以在动态环境中维护和重新配置自己,而无需人工干预。使用自主网络的传感系统根据当前场景做出决策,使系统更加智能。在本文中,我们提出了一个节能的智能建筑系统。系统采用LoRa协议进行信息通信。该系统由压缩-解压缩和自治网络模型组成,用于减小感知信息的大小,并在给定约束条件下自动选择合适的感知信息压缩比传递给操作者。我们的结果证明了所提出的压缩-解压缩和自治网络模型对系统延迟、能耗和精度的影响。
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引用次数: 1
A Proof of Concept on Digital Twin-Controlled WiFi Core Network Selection for In-Flight Connectivity 用于飞行连接的数字双控WiFi核心网络选择的概念证明
Q1 Social Sciences Pub Date : 2022-09-01 DOI: 10.1109/MCOMSTD.0001.2100103
T. Bilen, Elif Ak, Bahadır Bal, B. Canberk
The in-flight connectivity (IFC) turns to a crucial need from luxury with technological advances. The WiFi-enabled IFC (W-IFC) meets most of this need by deploying access points within the aircraft. These access points can allow Internet connectivity through various core network links air-to-ground (A2G), air-to-satellite (A2S), and air-to-air (A2A) at different times during the flight. More specifically, the core network of W-IFC should be selected from these links according to their availabilities throughout the aircraft's flight. However, the ultra-dynamic characteristic of aeronautical networks caused by aircraft's high speed reduces W-IFC's core network selection efficiency. The problems on the core network selection of W-IFC increase the core network selection delay with higher packet losses. Additionally, the core network selection of W-IFC becomes more complex when user traffic heterogeneity is added to this connection availability. These complexities necessitate the continuous monitoring of the aircraft environment while dealing with multiple data entries. At that point, the digital twin (DT) technology enables us a continuous monitoring and management opportunity in a virtual manner for the ultra-dynamic aeronautical environment. By considering this, in this article, we aim to introduce a proof-of-concept (PoC) about the utilization of digital twin technology in WiFi core network selection for IFC. Our proposed DT module executes the hybrid combination by utilizing the connectivity and traffic-based core network selection models simultaneously. Here, the connectivity-based core network selection focuses on determining aircraft's possible core network links, while the traffic-based selection considers heterogeneous traffic flows of passengers. Results reveal that the proposed DT-controlled model reduces the WiFi core network selection delay 36 percent with 25 percent packet delivery improvement. Also, we prove the feasibility of the PoC W-IFC model through twinning rate with near-real-time measurements. And we show the decision performance of DT with false positive and false negative rates.
随着技术的进步,机上连接(IFC)从奢侈品变成了一种至关重要的需求。支持WiFi的IFC(W-IFC)通过在飞机内部署接入点来满足大部分需求。这些接入点可以允许在飞行过程中的不同时间通过各种核心网络链路空对地(A2G)、空对星(A2S)和空对空(A2A)进行互联网连接。更具体地说,W-IFC的核心网络应根据其在飞机飞行过程中的可用性从这些链路中选择。然而,飞机的高速导致航空网络的超动态特性降低了W-IFC的核心网络选择效率。W-IFC的核心网络选择问题增加了核心网络选择延迟和更高的分组损耗。此外,当用户流量异构性被添加到该连接可用性时,W-IFC的核心网络选择变得更加复杂。这些复杂性要求在处理多个数据条目的同时对飞机环境进行连续监测。在这一点上,数字孪生(DT)技术使我们能够以虚拟的方式对超动态航空环境进行持续的监测和管理。考虑到这一点,在本文中,我们旨在介绍一种关于在IFC的WiFi核心网络选择中使用数字孪生技术的概念验证(PoC)。我们提出的DT模块通过同时利用基于连接和流量的核心网络选择模型来执行混合组合。这里,基于连通性的核心网络选择侧重于确定飞机可能的核心网络链路,而基于流量的选择则考虑乘客的异构流量。结果表明,所提出的DT控制模型将WiFi核心网络选择延迟降低了36%,数据包传递改进了25%。此外,我们通过近实时测量的孪晶率证明了PoC W-IFC模型的可行性。我们展示了DT在假阳性率和假阴性率下的决策性能。
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引用次数: 2
期刊
IEEE Communications Standards Magazine
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