Workshops and Tutorials

Session HWS1-S1: 5G and Beyond Technology-enabled Remote Health Systems I Session HWS1-S2: 5G and Beyond Technology-enabled Remote Health Systems II
Session HWS2-S1: Invited Keynote Speakers - Part 1 Session HWS2-S2: Aerial Communications in 5G and Beyond Networks Session HWS2-S3: Invited Keynote Speakers - Part 2 Session HWS2-S4: Panel Discussion
Session HWS5-S1: Invited Keynote Presenations Session HWS5-S2: Full Duplex Radio Technologies
Session FWS7-S1: Invited Keynote Presentation Session FWS7-S2: Distributed Sensing and Localization Session FWS7-S3: IoT Applications
Session FWS6-S1: Caching in Heterogenous Wireless Network Session FWS6-S2: Coded Caching at Network Edge Session FWS6-S3: Intellignet Edge Computing Session FWS6-S4: Enabling the Network Edge Intelligence
Session HWS10-Opening: Opening Session Session HWS10-Keynote: Keynote Session HWS10-S1: Smart Spectrum 1 Session HWS10-S2: Smart Spectrum 2
Session FWS8-S1: Invited Keynote Speaker - 1 Session FWS8-S2: Session 1: Open-RAN Infrastructure Session FWS8-S3: Invited Keynote Speaker - 2 Session FWS8-S4: Invited Keynote Speaker - 3 Session FWS8-S5: Session 2: Open-RAN Modelling and Analysis Session FWS8-S6: Invited Keynote Speaker - 4 Session FWS8-S7: Session 3: Open-RAN Intelligent ML/AI Evaluations
Session FWS9-S1: Mobile Wireless Networks Session FWS9-S2: Future Networking Technologies Session FWS9-S3: Intelligent Communication Technologies Session FWS9-S4: Communication Techniques
Session FWS3-S1: Keynotes and Industry Activity Session FWS3-S2: Measurements, RFIC, and Optical Methods Session FWS3-S3: Metasurface, Lens, and OAM Session FWS3-S4: Channel Sounder, Antenna Array, and MIMO
Session TUT01: Tutorial: Federated Learning at the Network Edge: Fundamentals, Key Technologies, and Future Trends Session TUT02: Tutorial: Towards Smart and Reconfigurable Environment: Intelligent Reflecting Surface Aided Wireless Networks Session TUT03: Tutorial: Machine Learning for Future Wireless Networks Session TUT05: Tutorial: Moving Towards Zero-Touch Automation, A Key Enabler for 6G: The Challenges & Opportunities Session TUT06: Tutorial: B5G: A New Frontier for Non-Orthogonal Multiple Access Session TUT04: Tutorial: Wireless Transmission for Advanced Internet of Things: A Unifying Data-Oriented Approach Session TUT07: Tutorial: UAV Communications in 5G and Beyond: Integration of Sensing, Control, and Learning Session TUT08: Tutorial: Orthogonal Time Frequency Space (OTFS) Modulation and Applications Session TUT09: Tutorial: URLLC for 5G and Beyond: Physical, MAC and Network Design and Solutions Session TUT10: Tutorial: NOMA-Based Random Access for Massive MTC in 5G
Session FWS4-S1: Access and Core Technologies: Part I Session FWS4-S2: Access and Core Technologies: Part II Session FWS4-S3: Architecture, Business Model and Services

13th International Workshop on Evolutional Technologies & Ecosystems for Beyond 5G and 6G (WDN-5G&6G)

Session FWS4-S1

Access and Core Technologies: Part I

Conference
10:45 AM — 12:15 PM KST
Local
May 24 Sun, 6:45 PM — 8:15 PM PDT

Network Selection in 5G Networks based on Markov Games and Friend-or-Foe Reinforcement Learning

Alessandro Giuseppi (University of Rome Sapienza, Italy); Emanuele De Santis (University of Rome "La Sapienza", Italy); Francesco Delli Priscoli (University of Rome, "La Sapienza", Italy); Seok Ho Won (ETRI, Korea (South)); Taesang Choi (Electronic and Telecommunications Research Institute, Korea (South)); Antonio Pietrabissa (Università di Roma La Sapienza, Italy)

0
This paper presents a control solution for the optimal network selection problem in 5G heterogeneous networks. The control logic proposed is based on multi-agent Friend-or-Foe Q-Learning, allowing the design of a distributed control architecture that sees the various access points compete for the allocation of the connection requests. Numerical simulations validate conceptually the approach, developed in the scope of the EU-Korea project 5G-ALLSTAR.

Probabilistic Shaping in Faster-Than-Nyquist System

Weimin Kang (Beijing University of Posts and Telecommunications, China); Zhanji Wu (BUPT, China)

0
Probabilistic shaping (PS) in Faster-than-Nyquist (FTN) system is proposed. The proposed system is based on probabilistically shaped 16QAM formats and 8QAM formats. The theoretical average mutual information (AMI) analysis of the proposed FTN PS scheme are analyzed and turns out that the proposed FTN PS scheme is superior to the conventional Nyquist regular system. The gains of simulation results are comparable to that obtained from the theoretical analysis. Compared with conventional Nyquist regular system, We can get FTN gains and PS gains for PS in FTN system. When spectral efficiency (SE) is 2.778 bits/s/Hz, the proposed 16QAM FTN PS scheme has 1.20 dB theoretical FTN gain and 0.35 dB theoretical PS gain, where the simulation results in 16QAM show that the FTN gain and PS gain are 0.75 dB and 0.40 dB, respectively. When SE is 2.083 bits/s/Hz, the proposed 8QAM FTN scheme has 1.55 dB theoretical FTN gain and 0.30 dB theoretical PS gain, where the simulation results in 8QAM show that the FTN gain and PS gain are 0.95 dB and 0.55 dB, respectively. The theoretical analysis and simulation results show that the proposed PS in FTN system is an efficient scheme for improving system performance, and thus suitable for the sixth generation (6G) communication system.

Design of Protograph-Based Quasi-Cyclic Spatially Coupled LDPC Codes

Shuoshuo Wang (Beijing University of Posts and Telecommunications, China); Zhanji Wu (BUPT, China)

0
In this paper, we deal with time-varing quasi-cyclic (QC) spatially-coupled (SC) low-density parity-check (LDPC) codes by lifting the coupled protographs. The construction method of girth-6 protographs for any code rate is proposed. We provide a theoretical lower bound on the syndrome former constraint length under condition of the protographs without 4-cycles in their Tanner graphs. Then we use periodic QC lifting method to search the QC-SC-LDPC matrices with larger girth based on the protographs. The minimum dimension size of QC-SC-LDPC codes is given to count the girth of QC-SC-LDPC codes with a semi-infinite binary-check matrix structure. The performance of such constructed codes with lower complexity and delay is superior to the LDPC block codes.
Session Chair

Ilgyu Kim (ETRI of KOREA, Korea)

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Session FWS4-S2

Access and Core Technologies: Part II

Conference
2:00 PM — 3:30 PM KST
Local
May 24 Sun, 10:00 PM — 11:30 PM PDT

Two-Stage Hybrid Beamforming Design for MmWave Multi-User Massive MIMO Systems

Ran Zhang and Weixia Zou (BUPT, China); Ye Wang and Ming Yang Cui (Beijing University of Posts and Telecommunications, China)

1
Hybrid beamforming (HBF) with massive multiple-input multiple-output (MIMO) is a promising technology for reaching a compromise between hardware complexity and system performance in 5G millimeter-wave (mmWave) communications systems. In this paper, we investigate the hybrid beamforming design in the downlink multi-user massive MIMO systems. According to information theory, we divide the communication procedure with hybrid beamforming into two different stages. In the analog stage, we propose an alternating optimization scheme to design the analog precoder and combiner, thereby maximizing the capacity of the equivalent baseband channel. Then, in the digital stage, we exploit the baseband block diagonalization method for the design of digital beamformer to eliminate inter-user interference. Finally, simulation results demonstrate that the proposed algorithm can achieve a higher sum-rate than some existing multi-user HBF schemes, while the convergence of the proposed algorithm is relatively fast.

Satellite and terrestrial multi-connectivity for 5G: making spectrum sharing possible

Nicolas Cassiau (CEA-Leti Minatec Campus, France); Gosan Noh (Electronics and Telecommunications Research Institute, Korea (South)); Stephan Jaeckel (Stephan Jaeckel Consulting, Germany); Leszek Raschkowski (Fraunhofer Heinrich Hertz Institute, Germany); Jean-Michel Houssin, Laurent Combelles and Marjorie Thary (Thales Alenia Space, France); Junhyeong Kim (ETRI, Korea (South)); Jean-Baptiste Doré (CEA, France); Marc Laugeois (CEA-LETI, France)

0
This paper reports the first results of the 5G-ALLSTAR project [1] aiming at providing solutions and enablers for spectrum sharing in a 5G cellular and satellite multi-connectivity context. First, we present an exhaustive study of the frequency bands eligible for these systems in the short and medium term. A ray-tracing based and a geometry-based stochastic channel models developed in the project are then described. These models can be used to simulate systems involving terrestrial and non-terrestrial networks. We then describe three different ways investigated in the project for managing interference: signal processing (hardware implementation of a 5G New Radio compatible physical layer), beamforming (steering and switching beams in order to avoid the interference while preserving the spectral efficiency) and radio resource management (tool designed for joint optimization of satellite and terrestrial resource sharing).

mmWave Massive Analog Relay MIMO for Improvement of Channel Capacity

Yuichiro Sugihara (Tokyo Institute of Technology, Japan); Kei Sakaguchi (Tokyo Institute of Technology & Fraunhofer HHI, Japan)

1
Recently, due to the increase in mobile traffic, further demand for channel capacity is expected. By using the millimeter-wave band, large-capacity communication can be realized by using a wider band than 4G/LTE. In addition, the antenna miniaturization makes it possible to install multi-element antennas on moving objects such as cars and buses. In the near future, automated driving will bring about new services such as viewing 4K 8K videos and satellite office. In order to deal with such use cases, it is necessary to realize large-capacity communication by massive MIMO transmission from a base station to a single user. However, there is a problem that the channel capacity is not expected to be improved by single-user massive MIMO using millimeter waves due to the large path loss in the millimeter wave band and high channel correlation. In this paper, we propose the mmWave Massive Analog Relay MIMO system that uses a large number of analog relay stations (RSs) to generate artificial propagation paths. Compared with the conventional method from the viewpoint of channel capacity and number of streams by changing the arrangement of these relay nodes. The effectiveness of the proposed method is reported by numerical simulation.
Session Chair

Ilgyu Kim (ETRI of KOREA, Korea)

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Session FWS4-S3

Architecture, Business Model and Services

Conference
3:45 PM — 5:15 PM KST
Local
May 24 Sun, 11:45 PM — 1:15 AM PDT

Technology Antecedents of the Platform-based Ecosystemic Business Models Beyond 5G

Seppo Yrjölä (Nokia & University of Oulu, Finland)

1
The fifth generation, 5G, mobile communications technologies are expected to transform the future wireless communications services and networks' business models and respective ecosystems. The paper discusses the extended ecosystemic platform architecture for 5G evolution consisting of components, interfaces, data and algorithms and investigates how this business framework can enable the transformation of the 5G. With roots in economics and engineering, this study looks 5G architecture through the lenses of platform-based ecosystemic business model framework utilizing themes of innovation, openness, complementarity, competition and cooperation, organization and governance, economies of scale and scope, and supply-side, demand-side, two-sided or multi-sided business models. Based on the timely review of the state-of-the-art studies on the topic in the recent literature and the results of the future-oriented workshop held in 6G Summit 2019, study showed that the transformation from current network-for-connectivity business models towards network-of-services model builds on platform with data and algorithms.

Key Technologies for the Advent of the 6G

Jose F Monserrat (Universitat Politècnica de València, Spain); David Martín-Sacristán (iTEAM Research Institute, Universitat Politècnica de València, Spain); Josue Flores de Valgas (Universitat Politècnica de València, Spain); Narcis Cardona (The Polytechnic University of Valencia, Spain); Faiza Bouchmal and Oscar Carrasco (Casa Systems, Spain)

1
True, the scientific community still has a lot to investigate on how to get 5G to have a satisfactory journey in the development of standards. However, it is now that we must begin to glimpse the future of mobile technology, it is time to imagine what 6G will be. This paper offers a realistic view of what this technology might be. In this case, the experience of one of the most important groups in Europe dedicated to the mobile communication systems design, the iTEAM research institute, is combined with the one of the world's leading manufacturers of femtocells, Casa Systems. From the belief that the deployment of 5G will come from homes, this paper analyzes the new use cases of the 6G, as well as the three technological pillars of this future technology.

Compelling services for 5G creation

Jahangir Dadkhah Chimeh (Iran Telecommunication Research Center, Iran)

0
M2M, IoT and high speed video services generate a high volume of information in the communication networks. Beside the above services, by increasing the traffic volume, Startups and Accelerators in the smart cities establish new Big data concept which necessitate a powerful communication infrastructure. Operators, organizations and vendors have suggested 5G for telecommunication networks to support new services. In 5G, access and core sections have been changed to support new services. Regarding to these variations, we review 5G specifications.

5G-ALLSTAR: An Integrated Satellite-Cellular System for 5G and Beyond

Junhyeong Kim (ETRI, Korea (South)); Guido Casati (Fraunhofer Institute for Integrated Circuits, Germany); Antonio Pietrabissa (Università di Roma La Sapienza, Italy); Alessandro Giuseppi (University of Rome Sapienza, Italy); Emilio Calvanese Strinati (CEA-LETI, France); Nicolas Cassiau (CEA-Leti Minatec Campus, France); Gosan Noh (Electronics and Telecommunications Research Institute, Korea (South)); Hee Sang Chung (ETRI, Korea (South)); Ilgyu Kim (ETRI of KOREA, Korea (South)); Marjorie Thary and Jean-Michel Houssin (Thales Alenia Space, France); Federico Pigni, Sylvain Colombero and Pierre Dal Zotto (Grenoble Ecole de Management, France); Leszek Raschkowski (Fraunhofer Heinrich Hertz Institute, Germany); Stephan Jaeckel (Stephan Jaeckel Consulting, Germany)

0
This paper provides an overview of recent research activities of the 5G AgiLe and fLexible integration of SaTellite And cellulaR (5G-ALLSTAR) project which aims to develop millimeter-wave (mmWave) 5G cellular access system and to investigate the feasibility of NR-based satellite access for providing broadband and reliable 5G services. The most important part of this project is to develop multi-connectivity technology that combines the cellular and satellite access to provide seamless, reliable and ubiquitous broadband services. In addition, spectrum sharing between the cellular and satellite access will be also studied. With all these technologies developed in the project, the 5G-ALLSTAR will showcase the first fully integrated satellite/cellular prototype system for 5G and B5G services at a big event in 2020. This paper also provides a preliminary techno-economic analysis on potential use cases targeting vertical markets, and introduces recent relevant standardization activities.
Session Chair

Ilgyu Kim (ETRI of KOREA, Korea)

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