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2020 2nd 6G Wireless Summit (6G SUMMIT)最新文献

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Signal-processing Challenges in Leveraging 100 Gb/s Wireless THz 利用100gb /s无线太赫兹的信号处理挑战
Pub Date : 2020-03-01 DOI: 10.1109/6GSUMMIT49458.2020.9083827
Pedro Rodríguez-Vázquez, M. Leinonen, J. Grzyb, N. Tervo, A. Pärssinen, U. Pfeiffer
This paper presents a wireless link based on a Tx and a Rx RF front-end module operating at a LO frequency of 230 GHz. The LO frequency generation paths of the Tx and the Rx are driven using two independent and unlocked frequency synthesizers. Due to this operation mode, the Tx LO leakage is down-converted in the Rx, generating a DC modulated tone that, if not properly handled, will prevent the system to operate appropriately. This paper analyses this effect and presents a solution to mitigate this impairment. Applying this, and using a 16-QAM modulation scheme, a maximum data-rate of 80 Gbps with an EVM of 12.5 % was achieved at a 1-meter distance.
本文提出了一种基于Tx和Rx射频前端模块的无线链路,其工作频率为230 GHz。Tx和Rx的LO频率产生路径使用两个独立且未锁定的频率合成器驱动。由于这种工作模式,Tx LO泄漏在Rx中被下转换,产生直流调制音,如果处理不当,将阻止系统正常运行。本文分析了这种影响,并提出了减轻这种损害的解决方案。应用该方法,并使用16-QAM调制方案,在1米距离上实现了80gbps的最大数据速率和12.5%的EVM。
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引用次数: 13
High-Efficiency Full-Duplex V2V Communication 高效全双工V2V通信
Pub Date : 2020-03-01 DOI: 10.1109/6GSUMMIT49458.2020.9083762
Zhifeng Yuan, Yihua Ma, Yuzhou Hu, Weimin Li
For the safety of future traffics, vehicle-to-vehicle (V2V) communication should be able to ensure high reliability and low latency in a dense scenario. Device to device (D2D) transmission, or sidelink, is a promising technology which reduces the latency of base station transit and does not rely on the cellular coverage. There are some sensing-based methods to realize it. Among them, sensing-based semi-persistent scheduling (SPS) achieves a relatively better performance. However, in a high-density scenario, the reliability is hard to achieve due to miss reception and multiuser interference. In this paper, a distributed antenna deployment and a novel full-duplex V2V transceiver are proposed. The antenna deployment makes full duplex much easier to realize and increases the degree of freedom in spatial domain. The transceiver uses autonomous grant-free transmission not relying on reference signal to support a large amount of users with a very high spectrum efficiency. By sufficiently utilizing the user multiplexing abilities in power, code, spatial and constellation domain, the transceiver is able to support highly reliable transmissions especially for the short-range vehicles. The simulation results show the proposed method achieves a much better performance and meanwhile uses only 20% time-frequency resources compared with the conventional method. Moreover, the adaptability to highly dynamic V2V network is also verified to be much better.
为了未来交通的安全,车对车(V2V)通信应该能够在密集场景下保证高可靠性和低延迟。设备到设备(D2D)传输或旁链传输是一种很有前途的技术,它可以减少基站传输的延迟,并且不依赖于蜂窝覆盖。有一些基于感知的方法来实现它。其中,基于感知的半持久调度(SPS)性能相对较好。然而,在高密度场景下,由于接收误报和多用户干扰,难以实现可靠性。本文提出了一种分布式天线部署和一种新型全双工V2V收发器。天线的部署使全双工更容易实现,并增加了空间域的自由度。收发器采用自主免授权传输方式,不依赖参考信号,以极高的频谱效率支持大量用户。通过充分利用用户在功率域、码域、空间域和星座域的复用能力,该收发器能够支持高可靠性的传输,特别是对于短程车辆。仿真结果表明,与传统方法相比,该方法具有更好的性能,同时只占用20%的时频资源。此外,对高动态V2V网络的适应性也得到了验证。
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引用次数: 15
6G Indicators of Value and Performance 6G价值与绩效指标
Pub Date : 2020-03-01 DOI: 10.1109/6GSUMMIT49458.2020.9083885
V. Ziegler, Seppo Yrjölä
A 6G vision is increasingly taking shape and so are associated strategies for transforming business models and expanding human possibilities enabled by novel architectural and technology concepts. Terahertz (THz) spectrum-based radio access, network as a sensor, edge centric and flow-based architecture, artificial intelligence as well as automated and secure network of networks provide new drivers for value and performance. We propose a heatmap of key performance attributes and value impact categories of growth, efficiency and sustainability. Indicative examples for the decoupling of 6G growth from cost are presented. A brief outline of key implications for business model transformation is given; results show that 6G business can be built on novel business opportunities, value generation and competitive advantage that have positive strategic consequence from scalability, replicability and sustainability.
6G愿景正在逐渐形成,相关战略也在逐渐形成,这些战略旨在改变商业模式,并通过新颖的架构和技术概念扩展人类的可能性。基于太赫兹(THz)频谱的无线电接入、网络即传感器、边缘中心和基于流的架构、人工智能以及自动化和安全的网络网络为价值和性能提供了新的驱动因素。我们提出了一个关键绩效属性和价值影响类别的热图,包括增长、效率和可持续性。给出了6G增长与成本脱钩的指示性示例。简要概述了商业模式转换的关键含义;结果表明,6G业务可以建立在新的商业机会、价值创造和竞争优势之上,这些优势从可扩展性、可复制性和可持续性方面具有积极的战略后果。
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引用次数: 43
Reconfigurable Intelligent Surface-Aided Grant-Free Access for Uplink URLLC 面向上行URLLC的可重构智能表面辅助免授权访问
Pub Date : 2020-03-01 DOI: 10.1109/6GSUMMIT49458.2020.9083788
D. Melgarejo, Charalampos Kalalas, A. S. D. Sena, P. Nardelli, G. Fraidenraich
Reconfigurable intelligent surfaces (RISs) have been recently considered as one of the emerging technologies for future communication systems by leveraging the tuning capabilities of their reflecting elements. In this paper, we investigate the potential of an RIS-based architecture for uplink sensor data transmission in an ultra-reliable low-latency communication (URLLC) context. In particular, we propose an RIS-aided grant-free access scheme for an industrial control scenario, aiming to exploit diversity and achieve improved reliability performance. We consider two different resource allocation schemes for the uplink transmissions, i.e., dedicated and shared slot assignment, and three different receiver types, namely the zero-forcing, the minimum mean squared error (MMSE), and the MMSE-successive interference cancellation receivers. Our extensive numerical evaluation in terms of outage probability demonstrates the gains of our approach in terms of reliability, resource efficiency, and capacity and for different configurations of the RIS properties. An RIS-aided grant-free access scheme combined with advanced receivers is shown to be a well-suited option for uplink URLLC.
可重构智能表面(RISs)最近被认为是未来通信系统的新兴技术之一,利用其反射元件的调谐能力。在本文中,我们研究了在超可靠低延迟通信(URLLC)环境下基于ris的上行传感器数据传输架构的潜力。特别是,我们提出了一种ris辅助免授权访问方案,用于工业控制场景,旨在利用多样性并实现改进的可靠性性能。我们考虑了两种不同的上行传输资源分配方案,即专用和共享插槽分配,以及三种不同的接收器类型,即强制归零、最小均方误差(MMSE)和MMSE连续干扰消除接收器。我们在中断概率方面进行了广泛的数值评估,证明了我们的方法在可靠性、资源效率和容量以及RIS属性的不同配置方面的收益。ris辅助的免授权访问方案与高级接收器相结合,是上行URLLC的理想选择。
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引用次数: 16
Trust Networking for Beyond 5G and 6G 超越5G和6G的信任网络
Pub Date : 2020-03-01 DOI: 10.1109/6GSUMMIT49458.2020.9083917
R. Kantola
Trust in a network context is about expected outcomes of decisions to communicate with a remote party, to click on a link or to believe in what an email says. The possible outcomes are either the positive value of the communication or being hacked or cheated in some way. Trust spans all protocol layers from the IP layer to applications and content. ITU - T is working on the framework architecture for trust networking. The White Paper after 1st IEEE 6G Summit advocated embedding trust into the 6G network in its networking chapter. We have worked on a concept we call Customer Edge Switching or cooperative firewalling for several years. In this paper, we analyze the proposed frameworks for the context of 6G and point out directions of future work. We offer several use cases where the framework could be first used and what are the regulatory issues in using the technology for Internet Access under the “open Internet” regulation.
在网络环境中,信任是关于与远程方沟通、点击链接或相信电子邮件内容的决定的预期结果。可能的结果要么是通信的积极价值,要么是以某种方式被黑客攻击或欺骗。信任跨越从IP层到应用程序和内容的所有协议层。国际电联- T正在研究信任网络的框架架构。首届IEEE 6G峰会后发布的白皮书在其网络章节中主张将信任嵌入6G网络。多年来,我们一直致力于我们称之为客户边缘交换或合作防火墙的概念。在本文中,我们分析了6G背景下提出的框架,并指出了未来工作的方向。我们提供了几个可以首次使用该框架的用例,以及在“开放互联网”监管下使用该技术进行互联网接入的监管问题。
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引用次数: 13
The Role of Blockchain in 6G: Challenges, Opportunities and Research Directions 区块链在6G中的作用:挑战、机遇和研究方向
Pub Date : 2020-03-01 DOI: 10.1109/6GSUMMIT49458.2020.9083784
T. Hewa, Gürkan Gür, A. Kalla, M. Ylianttila, An Bracken, Madhusanka Liyanage
The world is going through a fundamental transformation with the emergence of the intelligent information era. The key domains linked with human life such as healthcare, transport, entertainment, and smart cities are expected to elevate the quality of service with high-end user experience. Therefore, the telecommunication infrastructure has to meet unprecedented service level requirements such as ultra high data rates and traffic volume for the prominent future applications such as Virtual Reality (VR), holographic communications, and massive Machine Type Communications (mMTC). There are significant challenges identifiable in the communication context to match the envisaged demand surge. The blockchain and distributed ledger technology is one of the most disruptive technology enablers to address most of the current limitations and facilitate the functional standards of 6G. In this work, we explore the role of blockchain to address formidable challenges in 6G, future application opportunities and potential research directions.
随着智能信息时代的到来,世界正在经历一场根本性的变革。医疗、交通、娱乐、智慧城市等与人类生活相关的关键领域,将以高端用户体验提升服务质量。因此,电信基础设施必须满足前所未有的服务水平要求,如超高的数据速率和流量,以满足虚拟现实(VR)、全息通信、大规模机器类型通信(mMTC)等突出的未来应用。在通信方面,要与预期的需求激增相匹配,存在可识别的重大挑战。区块链和分布式账本技术是解决当前大多数限制并促进6G功能标准的最具颠覆性的技术推动者之一。在这项工作中,我们探讨了区块链在应对6G面临的巨大挑战、未来的应用机会和潜在的研究方向方面的作用。
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引用次数: 103
Massive MIMO Stochastic Geometry and Analysis of Beamforming with Partial CSIT 大规模MIMO随机几何与部分CSIT波束形成分析
Pub Date : 2020-03-01 DOI: 10.1109/6GSUMMIT49458.2020.9083798
C. Thomas, D. Slock
We consider coordinated beamforming (BF) for the Multi-Input Single-Output (MISO) Interfering Broadcast Channel (IBC) under imperfect channel state information at the transmitter(s) (CSIT). We start from a BF design which optimizes a Massive MISO limit upper bound of the ergodic capacity, termed Expected Signal and Interference Power Weighted Sum Rate (ESIP-WSR). We extend a recently introduced large system analysis (LSA) for beamformers with partial CSIT, by a stochastic geometry inspired randomization of the channel covariance eigen spaces, leading to much simpler analytical results. These depend only on some essential channel characteristics such as the numbers of antennas and users, channel rank and eigenvalue profile, and (channel estimate) signal to noise ratio (SNR). We analyze the spectral efficiency behavior at extreme SNR regions which provide insights (through the SNR offset) into the characteristics of the various channel estimates and suboptimal BFs compared to ESIP-WSR BF with Linear Minimum Mean Squared Error (LMMSE) channel estimates. Furthermore, simulations validate the superior performance of ESIP-WSR BF compared to the suboptimal BFs with different channel estimates and also the accuracy of the large system approximations derived herein. Our analysis is focused on constant channel estimation regime which is indicative of the finite rate feedback channels and pilot contamination regime.
研究了多输入单输出干扰广播信道(IBC)在不完全信道状态信息条件下的协调波束形成问题。我们从BF设计开始,该设计优化了遍历容量的大规模MISO上限上限,称为期望信号和干扰功率加权和率(ESIP-WSR)。我们扩展了最近引入的具有部分CSIT的波束成形器的大系统分析(LSA),通过随机几何启发的信道协方差特征空间的随机化,导致更简单的分析结果。这些只依赖于一些基本的信道特性,如天线和用户的数量,信道秩和特征值轮廓,以及(信道估计)信噪比(SNR)。我们分析了极端信噪比区域的频谱效率行为,与具有线性最小均方误差(LMMSE)信道估计的ESIP-WSR BF相比,它(通过信噪比偏移)提供了对各种信道估计和次优BF特性的见解。此外,仿真验证了ESIP-WSR BF与不同信道估计的次优BF相比的优越性能,以及本文导出的大系统近似的准确性。我们的分析集中在恒定信道估计制度,这是有限速率反馈信道和试点污染制度的指示。
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引用次数: 0
Unifying Multi-Radio Communication Technologies to Enable mMTC Applications in B5G Networks 统一多无线电通信技术,实现B5G网络中的mMTC应用
Pub Date : 2020-03-01 DOI: 10.1109/6GSUMMIT49458.2020.9083791
Radek Mozny, Martin Stusek, Pavel Mašek, Konstantin Mikhaylov, Jiri Hosek
Even though the wireless communication technologies have evolved significantly in the last decade, the performance requirements of versatile massive Machine-Type Communication (mMTC) use-cases grow at even faster pace. For this reason, the challenge of providing energy-efficient, reliable, secure, and variable devices with ubiquitous connectivity cannot be addressed by any single Radio Access Technology (RAT) available today. Therefore, the concept of multi-RAT devices in the context of next-generation communication technologies (5G and beyond 5G (B5G)) comes into play. In this paper, we investigate the utility of multi-RAT IoT connectivity in practice with respect to a Smart City scenario, in which the location of public transport vehicles e.g., trams and buses is tracked and reported by a device equipped with two Low-Power Wide-Area Network (LPWAN) technologies i.e., Narrowband IoT (3rd Generation Partnership Project (3GPP)) and LoRaWAN (non-3GPP). Both technologies got matured and have shown their momentum in the recent years, and are expected to play the key role also in the future. We first detail the constructed multi-RAT prototype and then report the initial results of its evaluation in a pilot deployment in the city of Brno, Czech Republic. The obtained results illustratively confirm the feasibility of joint usage of two diverse LPWAN RATs while their combination brings higher flexibility, reliability, and improve the overall Quality of Service (QoS) to wireless connectivity.
尽管无线通信技术在过去十年中有了显著的发展,但多功能大规模机器类型通信(mMTC)用例的性能要求增长得更快。因此,提供具有无处不在的连接的节能、可靠、安全和可变设备的挑战无法通过当今可用的任何单一无线接入技术(RAT)来解决。因此,在下一代通信技术(5G和超越5G (B5G))的背景下,多rat设备的概念开始发挥作用。在本文中,我们研究了智慧城市场景中多rat物联网连接的实用性,其中公共交通车辆(如有轨电车和公共汽车)的位置由配备两种低功耗广域网(LPWAN)技术的设备跟踪和报告,即窄带物联网(第三代合作伙伴项目(3GPP))和LoRaWAN(非3GPP)。这两种技术在近年来已经成熟并显示出其发展势头,并有望在未来发挥关键作用。我们首先详细介绍了构建的多rat原型,然后报告了在捷克共和国布尔诺市试点部署的初步评估结果。所得结果说明了两种不同的LPWAN rat联合使用的可行性,它们的组合为无线连接带来了更高的灵活性和可靠性,并提高了整体服务质量(QoS)。
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引用次数: 6
Privacy-Aware Blockchain Innovation for 6G: Challenges and Opportunities 面向6G的隐私意识区块链创新:挑战与机遇
Pub Date : 2020-03-01 DOI: 10.1109/6GSUMMIT49458.2020.9083832
Tri Nguyen, N. Tran, Lauri Lovén, Juha Partala, Mohand Tahar Kechadi, S. Pirttikangas
6G wireless networks improve on 5G by further increasing reliability, speeding up the networks and increasing the available bandwidth. These evolutionary enhancements, together with a number of revolutionary improvements such as high-precision 3D localization, ultra-high reliability and extreme mobility, introduce a new generation of 6G-native applications. Such application can be based on, for example, distributed, ubiquitous Artificial Intelligence (AI) and ultra-reliable, low-latency Internet of Things (IoT). Along with the enhanced connectivity and novel applications, privacy and security of the networks and the applications must be ensured. Distributed ledger technologies such as blockchain provide one solution for application security and privacy, but introduce their own set of security and privacy risks. In this work, we discuss the opportunities and challenges related to blockchain usage in 6G, and map out possible directions for overtaking the challenges.
6G无线网络通过进一步提高可靠性、加快网络速度和增加可用带宽来改进5G。这些渐进式的增强,加上高精度3D定位、超高可靠性和极端移动性等一系列革命性的改进,引入了新一代6g原生应用。例如,这种应用可以基于分布式、无处不在的人工智能(AI)和超可靠、低延迟的物联网(IoT)。随着连接性的增强和新应用的出现,必须确保网络和应用程序的隐私和安全。区块链等分布式账本技术为应用安全和隐私提供了一种解决方案,但也引入了自己的一套安全和隐私风险。在这项工作中,我们讨论了与6G中区块链使用相关的机遇和挑战,并制定了克服挑战的可能方向。
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引用次数: 46
Six Key Features of Machine Type Communication in 6G 6G下机器式通信的六个关键特征
Pub Date : 2020-03-01 DOI: 10.1109/6GSUMMIT49458.2020.9083794
N. Mahmood, H. Alves, O. A. López, M. Shehab, D. M. Osorio, M. Latva-aho
While 5G is being rolled out in different parts of the globe, several research groups around the world have already started posing the question: What will the sixth generation (6G) be? The 6G vision is a data-driven society, enabled by near instant unlimited wireless connectivity. Driven by the impetus to provide vertical-specific wireless network solutions, machine type communication encompassing both its mission critical and massive connectivity aspects is foreseen to be an important cornerstone of 6G development. An over-arching vision for machine type communication in 6G networks is presented in paper. In this regard, some relevant performance indicators are first discussed, followed by a presentation of key enablers.
虽然5G正在全球不同地区推出,但世界各地的几个研究小组已经开始提出这样一个问题:第六代(6G)将是什么?6G愿景是一个数据驱动的社会,通过近乎即时的无限无线连接实现。在提供垂直特定无线网络解决方案的推动下,包括关键任务和大规模连接方面的机器类型通信预计将成为6G发展的重要基石。本文提出了6G网络中机器类型通信的总体愿景。在这方面,首先讨论一些相关的绩效指标,然后介绍关键的促成因素。
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引用次数: 102
期刊
2020 2nd 6G Wireless Summit (6G SUMMIT)
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