Short-packet communications – fundamentals and practical coding schemes Download slides
by Giuseppe Durisi (Chalmers) and Fabian Steiner (TU Munich)
The design of block codes for short information blocks (e.g., a thousand or less information bits) is an open research problem that is gaining increasing relevance because of emerging applications in the area of lowlatency wireless communication. In this tutorial, we shall review the fundamental tradeoff between throughput and reliability when transmitting short packets, using recently-developed tools in ﬁnite-blocklength information theory. We will then describe the state-of-the-art code constructions (involving binary/nonbinary LDPC and turbo codes, polar codes, and tailbiting convolutional codes) for the short-block regime, and compare their performance with nonasymptotic information-theoretic limits.
Speciﬁcally, we will illustrate how to achieve performance close to the theoretical bounds with different performance vs. decoding complexity trade-offs. A special emphasis will be given to the LDPC and polar code solutions selected within 3GPP for eMBB data and control channel signaling.
Giuseppe Durisi received the Laurea degree summa cum laude and the Doctor degree both from Politecnico di Torino, Italy, in 2001 and 2006, respectively. From 2006 to 2010 he was a postdoctoral researcher at ETH Zurich, Zurich, Switzerland. In 2010, he joined Chalmers University of Technology, Gothenburg, Sweden, where he is now professor with the Communication Systems Group and co-director of Chalmers ICT Area of Advance and of Chalmers AI research centre.
Dr. Durisi is a senior member of the IEEE. He is the recipient of the 2013 IEEE ComSoc Best Young Researcher Award for the Europe, Middle East, and Africa Region, and is co-author of a paper that won a “student paper award” at the 2012 International Symposium on Information Theory, and of a paper that won the 2013 IEEE Sweden VTCOM-IT joint chapter best student conference paper award. In 2015, he joined the editorial board of the IEEE Transactions on Communications as associate editor. From 2011 to 2014, he served as publications editor for the IEEE Transactions on Information Theory. His research interests are in the areas of communication and information theory and machine learning.
Fabian Steiner was born in Prien am Chiemsee, Germany. He received the B.Sc. degree and M.Sc. degree (with high distinction) in electrical engineering from the Technical University of Munich (TUM), Germany, in 2011 and 2014, respectively. He is now working toward the Ph.D. degree at the Institute for Communications Engineering, TUM. He is supervised by Prof. Gerhard Kramer. His current research interest include coding, modulation and multi-user massive MIMO systems. He received the Prof. Dr. Ralf Kötter memorial award for his master’s thesis and won the third prize of the 2015 Bell Labs Prize with his proposal on probabilistic shaping for capacity achieving and rate adaptive communication.
5G Cellular-V2X Download slides
by Tommy Svensson (Chalmers), Mikael Fallgren (Ericsson), Antonio Eduardo Fernandez Barciela (PSA), Zexian Li (Nokia), Laurent Gallo (Orange Labs), Toktam Mahmoodi (KCL), Bastian Cellarius (Ericsson)
This tutorial will give an introduction to 5G cellular V2X (Vehicle-to-Everything), and elaborate on key use cases, requirements and technical enablers with a special focus on the research outcomes from the EU H2020 5GPPP 5GCAR project (https://5gcar.eu/). The main objectives within the 5GCAR project has been to develop an overall 5G system architecture providing optimized end-to-end V2X network connectivity for highly reliable and low-latency V2X services, which supports security and privacy, manages quality-of-service and provides traffic flow management in a multi-RAT and multi-link V2X communication system; Interworking of multi-RATs that allows embedding existing communication solutions and novel 5G V2X solutions; Develop an efficient, secure and scalable sidelink interface for low-latency, high-reliability V2X communications; Propose 5G radio-assisted positioning techniques for both vulnerable road users and vehicles to increase the availability of very accurate localization; Identify business models and spectrum usage alternatives that support a wide range of 5G V2X services; and Demonstrate and validate the developed concepts and evaluate the quantitative benefits of 5G V2X solutions using automated driving scenarios in test sites. In this tutorial we will also highlight recent academic research results for beyond 5G in the area of network assisted vehicular communications.
Tommy Svensson [S’98, M’03, SM’10] is Full Professor in Communication Systems at Chalmers University of Technology in Gothenburg, Sweden, where he is leading the Wireless Systems research on air interface and wireless backhaul networking technologies for future wireless systems. He received a Ph.D. in Information theory from Chalmers in 2003, and he has worked at Ericsson AB with core networks, radio access networks, and microwave transmission products. He was involved in the European WINNER and ARTIST4G projects that made important contributions to the 3GPP LTE standards, the EU FP7 METIS and the EU H2020 5GPPP mmMAGIC 5G projects, and currently in the EU H2020 5GPPP 5GCar project, as well as in the ChaseOn antenna systems excellence center at Chalmers targeting mm-wave solutions for 5G access, backhaul and V2X scenarios. His research interests include design and analysis of physical layer algorithms, multiple access, resource allocation, cooperative systems, moving networks, and satellite networks. He has co-authored 4 books, 80 journal papers, 121 conference papers and 52 public EU projects deliverables. He is Chairman of the IEEE Sweden joint Vehicular Technology/ Communications/ Information Theory Societies chapter and editor of IEEE Transactions on Wireless Communications, and has been editor of IEEE Wireless Communications Letters, Guest Editor of several top journals, organized several tutorials and workshops at top IEEE conferences, and served as coordinator of the Communication Engineering Master’s Program at Chalmers.
Mikael Fallgren is a Senior Researcher at Ericsson Research, Stockholm, Sweden. He has received a M.Sc. degree in engineering physics and a Ph.D. degree in applied and computational mathematics from KTH (the Royal Institute of Technology), Stockholm, and a B.Sc. degree in business administration from Stockholm University. His research interests include V2X and wireless access networks. In the METIS project he led the work on scenarios and requirements as well as on dissemination and standardization. He was editor for two chapters of the book: 5G Mobile and wireless communications technology. Dr Fallgren is the 5GCAR project coordinator (https://5gcar.eu/).
Part I: 5G NR positioning by Basuki Priyanto (Sony)
Part II: low power MTC/NR by Nafiseh Mazloum (Sony)
Abstract Part I:
We will present an overview of positioning in 5G NR. NR positioning poses many challenges than the predecessor (e.g. LTE). It includes the need to be operated in both FR1 and FR2, supporting many deployment scenarios (outdoor, indoor, etc), and to support both regulatory and demanding commercial positioning requirements. First, the potential NR positioning use-cases and its requirements will be presented. NR radio access has many new features, such as wider bandwidth, and beam management operation. In addition, some potential NR positioning techniques have been identified. We will present the details of those techniques and also how to utilize NR new features to improve positioning accuracy.
Abstract Part II:
To support IoT applications through cellular connectivity, several enhancements have been introduced to LTE, by adding new features to reduce the device cost and complexity, and also enabling connectivity for large number of devices covering all types of communication between machines. In this presentation, we will give an overview of massive Machine Type Communication (mMTC) features. Energy efficiency is one of the key requirement for mMTC/IoT devices. We discuss in more detail power savings schemes for mMTC and potential future NR IoT devices which allow low power operation.
Basuki Priyanto received the M.Eng degree in electrical and electronic engineering from Nanyang Technological University, Singapore in 2002 and the Ph.D. degree in wireless communications from Aalborg University, Denmark in 2008. From 2005 to 2008 he was an external researcher at Nokia Networks. From 2008 to 2012 he worked with baseband algorithm unit at Ericsson Mobile Platform. From 2012 to 2014 he was a Senior specialist at Huawei Technologies Sweden. He is currently with research and standardization at Sony Research Center Lund as Master Engineer. His research interests include positioning techniques in cellular network and optimization of machine type communications (MTC), in particular related to low power consumption, and radio access protocol.
Nafiseh Mazloum received the M.Sc. degree in Digital Communication Systems and Technology from Chalmers University in 2008 and the Ph.D. degree in Radio Systems from Lund University in 2016. From 2000 to 2006, she worked as a hardware design engineer at Catalyst Enterprises Inc (acquired by LeCroy), in Tehran, Iran. From 2007 to 2008 she was with the Distributed Sensor Systems Department at Philips Research Eindhoven, the Netherlands. Since 2017, she works as a researcher at the Radio Access Lab., Sony Research Center Lund, Sweden. Her main research focus is on low-power wireless communication systems.
In this presentation we will give an overview over the NR physical layer. Compared to earlier mobile communication standards, NR has a much wider operating range stretching from sub-1 GHz to several 10 GHz, operates over much wider bandwidth, provides lower latencies, and has a very lean design enabling energy efficient operation. We will present NR design choices such as frame structure, modulation and numerology, control channels, reference signals, coding, and multi-antennas techniques enabling these extended operating characteristic. Operations in mmW bands require high-gain beamforming and as a consequence communication will often be beam-based, beam management becomes therefore an essential part of NR mmW operations. Fundamentals on NR beam management will discussed.
Robert Baldemair received his Dipl. Ing. and Dr. degree from the Vienna University of Technology in 1996 and 2001, respectively. From 1996 to 2000 he was a research assistant at the Vienna University of Technology. In 2000 Robert joined Ericsson where he initially was engaged in research and standardization of digital subscriber line technologies ADSL and VDSL. Since 2004 Robert has been working with research and development of radio access technologies for LTE and since 2011 with wireless access for 5G. Currently he holds a Master Researcher position at Ericsson.
Robert received the Ericsson Inventor of the Year 2010 award, an award Ericsson awards to employees with substantial contributions to Ericsson’s patent portfolio. In 2014 he and colleagues at Ericsson were nominated for the European Inventor Award, the most prestigious inventor award in Europe, for their contribution to LTE.
Robert’s research interests include signal processing and communication theory for wireless communications systems.
Claes Tidestav received his M.Sc. and PhD degrees from Uppsala university in 1994 and 1999, respectively. Between 1999 and 2003, he worked with Systems management for early 3G development with Ericsson, before joining Ericsson research. Between 2003 and 2008, he worked with radio network algorithms for 3G systems, and between 2008 and 2014 he led the research on radio network algorithms at Ericsson Research. Since 2015, Claes has worked with radio network algorithms, in particular related to the advanced antenna aspects. In recent years, Claes has worked with advanced antenna solutions for 5G, with particular focus on mmW systems. Currently, he holds a Principle Researcher position at Ericsson.
Claes’ research interests include radio network algorithms, in particular related to advanced antenna systems and the interaction with higher layer protocols.