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Tutorials
Title: Quality of Service in Terrestrial Wireless and Satellite Networks for Mobile Personal Services
Speaker: Dr Giovanni Giambene
Alliation University of Siena, Italy
Abstract
Broadband wireless systems are very popular today and several networks and technologies are available. Customers expect to access to Internet services with predictable and high Quality of Service (QoS) levels according to suitable network mechanisms. Bandwidth (and, especially, satellite bandwidth) is a scarce resource and its use entails costs for operators a well as for customers. Hence, bandwidth utilization has to be particularly efficient and to allow the support of different traffic types with suitable Service Level Agreements (SLA). In particular, ITU-T traffic classes and requirements (ITU-T Y.1541 Recommendation) as well as ESA Satlab QoS requirements will be presented.
Then, this lecture will provide the basic knowledge on QoS approaches in multi-traffic IP scenario, including: traffic shaping, traffic scheduling, call admission control, queue management techniques, and traffic prioritization. The interest will focus on wireless technologies, such as WiFi, WiMAX, LTE, DVB-S2 (and recent advances), whose air interfaces are characterized by Adaptive Modulation and Coding (ACM) and different QoS support mechanisms. A particular attention will be devoted to traffic classes in these broadband wireless systems. Finally, QoS support schemes will be presented in the context of hybrid satellite networks (WiFi+satellite) for the train scenario.
Biography
Dr. Giovanni Giambene (giambene@unisi.it, http://www.dii.unisi.it/~giambene/) was born in Florence, Italy, in 1966. He received the Dr. Ing. degree in Electronics in 1993 and the Ph.D. degree in Telecommunications and Informatics in 1997, both from the University of Florence, Italy. From 1994 to 1997, he was with the Electronic Engineering Department of the University of Florence, Italy. He was Technical External Secretary of the European Community COST 227 Action (“Integrated Space/Terrestrial Mobile Networks”). He also contributed to the SAINT Project (“Satellite Integration in the Future Mobile Network”, RACE 2117). From 1997 to 1998, he was with OTE of the Marconi Group, Florence, Italy, where he was involved in a GSM development program. In the same period he also contributed to the COST 252 Action (“Evolution of Satellite Personal Communications from Second to Future Generation Systems”) research activities by studying PRMA protocols for voice and data transmissions in low earth orbit mobile satellite systems. In 1999, he joined the Information Engineering Department of the University of Siena, Italy, first as research associate and then as assistant professor and aggregate professor. He teaches the advanced course of Telecommunication Networks at the University of Siena. From 1999 to 2003 he participated to the project “Multimedialità”, financed by the Italian National Research Council (CNR). From 2000 to 2003, he contributed to the “Personalised Access to Local Information and services for tourists” (PALIO) IST Project within the EU FP5 programme. He was vice-Chair of the COST 290 Action (http://www.cost290.org/) for its whole duration 2004-2008, entitled “Traffic and QoS Management in Wireless Multimedia Networks” (Wi-QoST). He participated to the SatNEx I & II network of excellence (FP6 programme, 2004-2009) as work package leader of two groups on radio access techniques and cross-layer air interface design for satellite communication systems (http://www.satnex.org/). He participated to the FP7 Coordination Action “Road mapping technology for enhancing security to protect medical & genetic data” (RADICAL) as work package leader. At present he is involved in the ESA SatNEX III research project (http://www.satnex3.org/) and to the COST Action IC0906 “Wireless Networking for Moving Objects” (WiNeMO, http://www.cost-winemo.org/). Giambene is IEEE senior member. He has published the following books: G. Giambene, “Queuing Theory and Telecommunications: Networks and Telecommunications”, Springer, May 2005; G. Giambene (Ed.), “Resource Management in Satellite Networks: Optimization and Cross-Layer Design”, Springer, April 2007. He has organized many conferences on wireless communications (ISWCS 2005 and ISWCS 2009) and satellite communications (IWSSC 2005-2009) and he has been TPC co-chair of the IEEE ISWPC 2007. G. Giambene is associate editor of the following international journals: "International Journal of Satellite Communications & Networking" published by Wiley, "ISNR Communications" by Hindawi Publishing Corporation, and "IEEE Communications Letters". His research interests deal with Radio resource management, Wireless networking, Satellite communications, Hybrid networking, Cross-layer air interface design, MAC layer performance evaluation, security and privacy in e-health applications.
Title: Resource Management in Cloud Computing
Speaker: Dr Nicola Tonellotto
Alliation Information Science and Technologies Institute, National Research Council of Italy
Abstract
Cloud computing is a model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction. The ubiquitous availability of high capacity networks, low cost computers and storage devices as well as the widespread adoption of virtualization and service-oriented architectures has led to a tremendous growth in cloud computing. Currently, cloud computing encompasses a large set of concepts, technologies and paradigms, and yet there is not a clear definition of its architecture, its components and the supporting infrastructure. The reason for such confusion is that the Cloud is multi-disciplinary. It straddles the areas of Grid computing, virtualization, IT management, clustering, Services-Oriented Architecture (SOA), with the overall goal of providing easily accessible interfaces for using and manipulating infrastructure.
This tutorial will provide an in-depth view on the current standards in Cloud Computing, as well as details on current implementation of the Cloud paradigm and the supporting technologies. In particular, we will focus on the characteristics, the service and deployment models of Clouds, as well as current installations and usages in Cloud infrastructures in success stories such as Amazon, Yahoo and Google. Finally, we will discuss details of the most widely adopted Cloud programming paradigm (i.e., MapReduce) and the basic virtualization technologies currently adopted in Cloud infrastructures.
Biography
Nicola Tonellotto is researcher at ISTI-CNR. His main research interests include Grid computing, Cloud computing, resource management and Web information retrieval. Nicola Tonellotto co-authored more than 30 papers on these topics in peer reviewed international journal and conferences. He also contributed to design and implement several software tools, such as the ASSIST programming environment and runtime support, the Grid Network Resource Broker, the Grid Execution Agent, the Grid Component Model reference implementation and the open source search engine TERRIER. He participated and coordinated activities in several EC projects such as CoreGRID, NextGRID, GRIDComp, S-Cube and InGeoClouds.
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