IEEE Symposium on Computers and Communications (ISCC'07)

Sponsored by IEEE Computer Society and IEEE Communications Society

July 1-4, Aveiro, Portugal

Abstract
After an overview of the distinctive features of interactive multimedia applications, their requirements on the network are discussed: limited delay and delay variation (Jitter) are identified as the most demanding requirements. The most common techniques for controlling service quality are presented and the two major frameworks for their deployment within IP networks, i.e., Integrated Services (IntServ) and Differentiated Services (DiffServ), outlined. The tutorial also studies the implications of the architecture of packet switches on delay bounds. Finally, the tutorial delves into more detail by analyzing the end-to-end delay components of a videoconferencing system step-by-step.

Author biography
Mario Baldi is Associate Professor of Computer Networks and head of the Computer Networks Group (NetGroup) at the Department of Computer Engineering of Politecnico di Torino (Technical University of Turin), Italy, coordinator of the BSc programme in Information & Communication Technologies at the Sino-Italian Engineering Campus, Tongji University, Shanghai, China, and Vice President for Protocol Architecture at Synchrodyne Networks, Inc., New York.
He received his M.S. Degree Summa Cum Laude in Electrical Engineering in 1993, and his Ph.D. in Computer and System Engineering in 1998 both from Politecnico di Torino. He was Assistant Professor on tenure track at Politecnico di Torino from 1997 to 2002. He joined Synchrodyne Networks, Inc. in November 1999.
Mario Baldi has been Honorary Visiting Professor at La Trobe University, Melbourne, Victoria, Australia, Adjunct Professor at University of Illinois at Chicago, Visiting Professor at Institut de Technologie du Cambodge, Phnom Penh, Cambodia, and visiting researcher at the IBM T. J. Watson Research Center, Yorktown Heights, NY, at Columbia University, New York, NY, and at the International Computer Science Institute (ICSI), Berkeley, CA.
As part of his extensive research activity at Politecnico di Torino, Mario Baldi has been leading various networking research projects, involving Universities and industrial partners, funded by European Union, Local Government, and various companies, including Telecommunications Carriers, such as Infostrada and Telecom Italia, and research institutions, such as Telecom Italia Labs and Microsoft Research.
Mario Baldi provides on a regular basis consultancy and training services, both directly to companies and through various training and network consultancy centers.
He co-authored over 70 papers on various networking related topics and two books, one (currently at the second edition) on internetworking and one on switched local area networks. Mario Baldi is co-inventor in five patents issued by the United States Patent Office in the field of optical networking, in fourteen applications to the United States Patent Office in the fields of high performance networking and security, and one application to the European Patent Office in the field of high performance networking.
His research interests include internetworking, high performance switching, optical networking, quality of service, multimedia over packet networks, voice over IP, and computer networks in general.

Abstract
The tutorial addresses communication protocols networking issues in wireless sensor networks. After an introduction to into general features of sensor nodes such as platforms and energy consumption as well as a comparison of wireless sensor networks with mobile ad-hoc networks, we study lower layer communication protocols in wireless sensor networks. In particular, we present medium access control protocols and compare them with protocols used in wireless local area networks. Then, we discuss the issue of topology control and present routing protocols proposed for wireless sensor networks. Reliable transport protocols as required for management and reprogramming of sensor nodes will be compared. Finally, security mechanisms to ensure confidentiality, authentication and network availability will be presented.

Author biography
Torsten Braun got his diploma and Ph.D. degrees from the University of Karlsruhe, Germany, in 1990 and 1993, respectively. From 1994 to 1995 he was a guest scientist with INRIA Sophia Antipolis. From 1995 to 1997 he worked as a project leader and senior consultant at the IBM European Networking Center, Heidelberg, Germany. Since 1998 he has been a full professor of computer science at the Institute of Computer Science and Applied Mathematics (University of Bern, Switzerland), heading the Computer Networks and Distributed Systems research group. He has been a board member of SWITCH (Swiss Education and Research network) since 2000. During his sabbatical in 2004, he has been working as visiting scientist at the Swedish Institute of Computer Science (Kista, Sweden) on transport, routing and medium access control issues in wireless sensor networks. He held various tutorials at conferences organized by the IEEE, SPIE, and German Computer Society. In particular, he held several tutorials on sensor networks in IEEE CCNC 2006 (Las Vegas), ISWCS 2006 (Valencia), and WCSN 2006 (Allahabad, India).

Abstract
Motivation to the need of Cellular WiMAX Planning Tools
Wireless Planning Tool
Propagation models (outdoor and indoor)
Capacity models and algorithms
Planning Tool Framework
Point-to-multipoint cellular planning (including C/N and C/I issues)
LoS dimensioning (urban and rural areas)
Advanced Topics on LoS Computation
Measurement campaigns and network operation
Topics on Point-to-point WiMAX links

Author biography
Fernando J. Velez received the Licenciado, MSc and PhD degrees in Electrical and Computer Engineering from Instituto Superior Técnico, Technical University of Lisbon in 1993, 1996 and 2001, respectively. Since 1995 he has been with the Department of Electromechanical Engineering of University of Beira Interior, Covilhã, Portugal, where he is Assistant Professor. He is also researcher at Instituto de Telecomunicações, Lisbon. He made or makes part of the teams of RACE/MBS, ACTS/SAMBA, COST 259, COST 273, COST 290, IST-SEACORN, IST-UNITE, and COST 2100 European projects, and he was/is the coordinator of four Portuguese projects: SAMURAI, MULTIPLAN, CROSSNET, and MobileMAN. He has authored around fifty papers and communications in international journals and conferences, plus twenty in national conferences, and is a member of IEEE, IAENG, and Ordem dos Engenheiros (EUREL). His main research areas are cellular planning tools, traffic from mobility, simulation of wireless networks, cross-layer design, inter-working, multi-service traffic and cost/revenue performance of advanced mobile communication systems.

Abstract
The various vendors of traditional security systems implement some portions of security functionality and security services, relying on their own, mostly non-structured, functional architecture. The key to successful network security implementation is to consider security management as an evolving integrated part of the overall network architecture. This tutorial provides an overall complete view of network security issues.
The workshop covers a concise discussion on the discipline of cryptography-covering algorithms and protocols underlying network security applications, security mechanisms, digital signatures, and key exchange. Internet security vulnerabilities, gateways, firewalls and their limitations, IPSec and key management for network layer security, TLS, SSH and transport layer security, virtual private networks, and secure remote access are covered.
In particular, security standards for authentication and privacy in both wire-line and wireless environment are described in detail. Implementation of IPSec as a security standard that affords the capability of securing communications across a local-area network (LAN), across public and private wide-area networks (WANs), and across the Internet is described.
This course offers a framework for security architecture to implement the full range of functionality of security for enterprise networks.

Author biography
Shervin Erfani is a professor and former Electrical and Computer Engineering Department Head at the University of Windsor, Windsor, Ontario, Canada.   His experience spans over 30 years with AT&T Bell Labs,  Lucent Technologies, University of Puerto Rico, University of Michigan-Dearborn,  Stevens Institute of Technology, and Iranian Naval Academy.  His expertise expands over many areas from System Theory to Digital Signal Processing to Network Security Management.   He has been a consultant to the industry for a number of years. Dr. Erfani has published more than 70 technical papers, holds three patents, and is the Senior Technical Editor of the Journal of Network and Systems Management and an associate editor for Computers & Electrical Engineering: An International Journal. He received a combined B.Sc. and M.Sc. degree in Electrical Engineering from the University of Teheran in 1971, and M.Sc. and Ph.D. degrees, also in Electrical Engineering, from Southern Methodist University in 1974 and 1976, respectively.   He was a Member of Technical Staff at Bell Labs of Lucent Technologies in Holmdel, New Jersey from 1985 to 2001.