Tutorial 1: September, 26

D2D communications in 5G networks: opportunities and challenges

By Salah Eddine Elayoubi , Associate Professor at Centrale Supélec, Paris

Biography: Salah Eddine Elayoubi obtained his engineering diploma from Lebanese University in 2000 and the Ph.D. and habilitation degrees from University Paris 6, France, in 2004 and 2009, respectively. From 2004 to 2017, he worked at Orange Labs as a principal researcher. In 2018, he joined CentraleSupélec, an engineering school located south of Paris, as associate professor. His research interests include design and performance evaluation of mobile networks and his current focus is on 5G RAN design. He is active in several EU research projects as contributor and coordinator and acted as head of the vision working group of 5G Infrastructure Association.

Abstract: Direct Device to Device (D2D) communications are expected to play an important role in 5G networks. This talk explores the usage of D2D communications for capacity and coverage extension in 5G network, for both eMBB and URLLC services. For capacity offload, we explore the usage of internal device memories as caches where popular contents are prefetched in off-peak hours. Devices can then serve as local access points in peak hours for serving neighboring users. In addition, devices can be used as relays for serving users in coverage holes. They will allow thus a coverage extension of the mobile network with higher energy efficiency. The talk also explores direct communications between machines in order to reduce latency for critical services.

Tutorial 2: September, 27

Drone aided networks : from collecting data to connecting people

By Ridha DHAOU, Associate Professor at the Toulouse INP (Institut National Polytechnique de Toulouse)

Biography: Dr. Riadh DHAOU is an Associate Professor at the Toulouse INP (Institut National Polytechnique de Toulouse). He is attached to the Computer Science and Telecommunication department of the ENSEEIHT and is a member, since 2003, of the IRT team of the IRIT (Institut de Recherche en Informatique de Toulouse) Laboratory. He received the Engineering degree in Computer Science from the ENSI (University of Tunis II) in 1997, and the Master Degree in Computer Systems from the University Pierre and Marie Curie in Paris (Paris VI), in 1998. He was awarded, respectively, a Ph.D. degree in Computer Systems, Telecommunication and Electronic by the University of Paris VI (in November 2002) and the HDR (Habilitation) by the Toulouse INP (in November 2017). His research interests include statistical characterization and modelling of mobility, mobile and space communications, modelling and optimization of cross-layer schemes, performance analysis of wireless networks, autonomous multi-hop/cooperative communications systems, capacity and outage analysis of multi-user heterogeneous wireless systems, resource allocation, design and performance evaluation of wireless sensor networks and energy consumption optimization. Since 2003, he is principal investigator with the cooperative laboratory TéSA, a non-profit association, leading research studies and PhDs in Telecommunications for Space and Aeronautics. Since November 2017, he is the leader of the satellite theme within the IRT team. He has supervised 14 Ph. D. Theses (9 were defended) and 5 master-degree theses. He has published more than 81 papers (including 7 journals and 5 book chapters) and his research activity has been funded by more than 35 research grants in satellite and sensor networks (CNES, Thales-Alenia Space, Airbus D&S). He has been technical leader for 7 research grants in satellite networks and participated in several industrial and academic grants. He participated to several European and National projects: - ESA SATNEX IV project -CAPES-COFECUB Project MMAPS (Management, Mobility, Security, Architecture and Protocols for the Future Internet of Things) - ANR Project CAPTEURS - RNRT Project DILAN - ESPRIT Project BISANTE (Broadband Integrated Satellite Network Traffic Evaluation) - RNRT Project CONSTELLATIONS He also participated to the Network of Excellence NoE Euro-NGI, particularly on the evolution of the IP networks. He was involved in the Technical Program Committee of 7 International Conferences. He was General Chair of PSATS'2013 and was member of one Organization Committee of two other International Conferences. He is, since 2013, part of the Editorial Board of WINET (The springer Wireless Networks journal).

Abstract:

The use of unmanned aerial vehicles (UAVs), known as drones, is bringing new networks and telecommunications challenges and is enabling a wide range of wireless networking applications. With their predictable mobility and adaptability, UAVs can serve in multiple potential application scenarios. On the one hand, UAVs can be used as aerial base stations to enhance coverage, capacity, reliability, and energy efficiency of wireless networks. For instance, UAVs can be deployed to complement existing cellular systems by providing additional capacity to hotspot areas as well as to provide network coverage in emergency and public safety situations. On the other hand, UAVs can operate as flying mobile terminals or mobile gateways within the cellular networks or mobile sensor networks. Such cellular-connected UAVs can enable a wide range of key applications expanding from real-time monitoring to data collection in wireless sensor networks. Despite the several benefits and practical applications of using UAVs as aerial wireless devices, one must address many technical challenges.

This tutorial surveys the potential benefits and applications of UAVs in wireless communications. Moreover, the important challenges and the fundamental tradeoffs in UAV-enabled wireless networks are thoroughly investigated, including drones mobility modeling, drones placement optimization taking into account significant performance metrics related to QoS and energy consumption.

With their high mobility and intermittent links, drones based networks require new solutions and revisiting technical problems in particular at the routing and access levels. In particular, we focus on three application scenarios: drones to collect data from wireless sensor networks, deployment of UAVs as mobile access points and monitoring mobile targets. The challenges behind modeling and evaluating the performance of networks composed of drones are discussed.

Tutorial 3: September, 28

Continuity of the Positioning Service

By François SPIES, Professor in Computer Science and Networking, University Bourgogne Franche-Comte

Biography: François Spies obtained his Computer Science Ph.D. thesis in 1994 and his French habilitation à diriger des recherches in 1999. Since 1999, he has been Professor at the University of Franche-Comte. His research interests include the performance evaluation of complex networks such as mobile ad hoc networks (MANET) and the Internet of Things (IoT). He works on indoor positioning systems using wireless networks, congestion control of multimedia streams and low energy in connected objects.

Abstract: No positioning system is universal, but measuring the position of an electronic device at any time is an issue for many mobile applications such as Context-Aware Applications. There are many methods to locate a terminal, but to ensure continuity of a positioning service both inside and outside, it is essential to merge many solutions to reach an area of utilization as wide as possible. Capture solutions such as GNSS, differential system, Wi-Fi, Ultra Wide Band, inertial unit, camera must be integrated to provide coordinates permanently. Many activity sectors are concerned by this revolution in our mobility: transport of goods and people, urban planning, economy, security, defense.