Associate Professor, University of Padova, Italy.
Title: Low Power Wide Area Networks: the LoRaWAN system
Time: 16:00 - 17:00, Monday February 18, 2019
The tutorial will start by quickly introducing the current broad landscape of the wireless communication technologies for the IoT and Smart Cities including those based on IEEE 802.15.4 (ZigBee, 6LoWPAN and Thread) and IEEE 802.11 (with some emphasis on 802.11ah). Then the tutorial will move forward to highlight the shortcomings of these technologies, having in mind the services which can be offered in Smart City, Home and industrial environments. Afterwards, the major LPWA technologies will be shortly introduced, including NB-IoT and SigFox. The benefits and drawbacks of using such a kind of technologies will be examined in general. The focus will move then more on the Lo-Ra and Lo-RaWAN systems, including the network architecture, the protocol stack, and the physical layer. This will constitute the core of the tutorial and the part where more specific technical details will be given.
Lorenzo Vangelista (IEEE SM'02) was born in Bassano del Grappa, Italy, in 1967. He received the Laurea degree from University of Padova, Padova, Italy, in 1992, and the Ph.D. degree in Electrical and Telecommunication Engineering from University of Padova,in 1995. He subsequently joined the Transmission and Optical Technology Department of CSELT, Torino, Italy. From December 1996 to January 2002, he was with Telit Mobile Terminals, Sgonico (TS), Italy and then, up to May 2003, with Microcell A/S, Copenaghen, Denmark. Until July 2006 he has been with the worldwide organization of Infineon Technologies, as program manager. Since October 2006 he is an Associate Professor of Telecommunication within the Department of Information Engineering of Padova University, Italy. His research interests include signal theory, multi- carrier modulation techniques, cellular networks, wireless sensors and actuators networks and smartgrid.
Professor, University of Oslo, Norway
Title: The End of the Socket API, and the Beginning of a Real Internet Transport Layer
Time: 17:00 - 18:00, Monday February 18, 2019
The Internet's Transport Layer has become ossified: the static binding between applications and transport protocols has made it impossible to deploy general-purpose transport protocols other than TCP or UDP at a large scale. Specialized protocols, typically over UDP, are customized per application, and the wheel is being re-invented (e.g., SCTP, Adobe's RTMFP and QUIC all support multi-streaming). All of this could now change. The Internet Engineering Task Force (IETF) Transport Services (TAPS) Working Group specifies a modern protocol-agnostic API and mechanisms underneath it, to engage and control protocols based on application requirements. As a contributor to the TAPS WG, Apple has recently made a move towards a TAPS-conformant transport system with their new Network.framework API (part of the beta for iOS 12 and macOS Mojave), first presented at the Apple Worldwide Developers Conference (WWDC) 2018. Network.framework, like any other TAPS transport system, breaks the static binding between applications and transport protocols. This allows the Operating System to dynamically test multiple network interfaces and protocols, configuring them according to the application's and user's needs. This tutorial will: explain why Berkeley sockets are no suitable abstraction for the modern Internet; present the ongoing work of the IETF TAPS WG, introduce the current TAPS API, and give an overview of the "under the hood" operation of a TAPS transport system; introduce NEAT, an open-source user-space TAPS implementation; explain how TAPS changes the game for Internet transport, allowing to gradually deploy radically different technologies in a fundamentally new and much better way than before -- this will use the Recursive InterNetwork Architecture (RINA) as an example.
Michael Welzl is a full professor in the Department of Informatics of the University of Oslo since 2009. He received his Ph.D. (with distinction) and his habilitation from the University of Darmstadt / Germany in 2002 and 2007, respectively. Michael Welzl has led the effort to create the IETF TAPS Working Group and is one of its major contributors. He was also the technical manager of the European Project "NEAT" which has developed a TAPS system, and he has been involved in the IETF and transport layer research in general for many years - for example, with 11 years of chairing the IRTF Internet Congestion Control Research Group, authoring of several RFCs, and publishing the only textbook on network congestion control ("Network Congestion Control: Managing Internet Traffic", John Wiley & Sons, 2007).