Abstract:
A concise description of the content and goals of the tutorial (5 to 10 lines) The tutorial focuses on emerging “smart” or “interactive” environments, which one that is able to acquire and apply knowledge about an environment and its inhabitants in order to improve their experience in that environment. Recent and ongoing advances in mobile and pervasive computing, wireless and sensor networks, adaptive displays, machine learning, voice and image recognition algorithms, middleware and agent based technologies are core enablers of this vision. In particular, the tutorial will focus on some sample smart space scenarios, specifically a smart home, smart office cubicle and interactive retail environments. At its core, the tutorial should help demonstrate how applications and middleware are being re-architected to leverage on an underlying rich sensor and actuator network substrate to provide both automated adaptation to changing user preferences and intentions, and to more natural interaction with the networked information infrastructure.

Dr. Sajal K. Das received B.S. degree in 1983 from Calcutta University, M.S. degree in 1984 from Indian Institute of Science at Bangalore, and Ph.D. degree in 1988 from the University of Central Florida at Orlando, all in Computer Science. He is a Professor of Computer Science and Engineering and also the Founding Director of the Center for Research in Wireless Mobility and Networking (CReWMaN) at the University of Texas at Arlington (UTA). Dr. Das is a recipient of the UNT Student Association's Honor Professor Award in 1991 and 1997 for best teaching and scholarly research; UNT's Developing Scholars Award in 1996 for outstanding research; UTA's Outstanding Faculty Research Award in Computer Science in 2001 and 2003; UTA's College of Engineering Research Excellence Award in 2003; and the University Award for Distinguished Record of Research in 2005. He is the coauthor of the book Smart Environments: Technology, Protocols and Applications, published by John Wiley in 2005.

Dr. Das’ current research interests include design and development of smart environments, resource and mobility management in wireless networks, mobile and pervasive computing, wireless multimedia, ad hoc and sensor networks, mobile internet architectures and protocols, distributed and grid computing, performance modeling and simulation. He received Best Paper Awards in the 5th Annual ACM International Conference on Mobile Computing and Networking (MobiCom’99), 16th International Conference on Information Networking (ICOIN’01), 3rd ACM International Workshop on Modeling, Analysis and Simulation of Wireless and Mobile Systems (MSWiM’00), and 11th ACM/IEEE International Workshop on Parallel and Distributed Simulation (PADS’97). Dr. Das serves as the Editor in Chief of the Pervasive and Mobile Computing (PMC) journal and also as an Associate Editor of IEEE Transactions on Mobile Computing, IEEE Transactions on Parallel and Distributed Systems, ACM/Springer Wireless Networks, Parallel Processing Letters, and Journal of Parallel, Distributed and Emerging Systems. He served as General Chair of IEEE WoWMoM’05, IEEE PerCom’04, IWDC’04, IEEE MASCOTS’02, ACM WoWMoM’00-02; General Vice Chair of IEEE PerCom’03, ACM MobiCom’00, IEEE HiPC’00-01; Program Chair of IWDC’02, WoWMoM’98-99; TPC Vice Chair of ICPADS’02; and as TPC member of numerous IEEE and ACM conferences. He is the Vice Chair of the IEEE Computer Society's TCPP and TCCC Executive Committees and on the Advisory Boards of several cutting-edge companies.


Dr. Archan Misra is a Research Staff Member with the Next Gen Web Infrastructure Department at the IBM TJ Watson Research Center, Hawthorne, NY. He has been working on infrastructural components and protocols for context-based computing and pervasive applications for the past 3 years. In particular, he works on IBM’s mobile computing product line and is currently exploring the use of SIP for retrieving an individual’s activity on different communication channels and thereby enhancing presence to reflect an individual’s availability for various tasks. As part of his earlier job as a researcher at Telcordia Technologies (Bellcore), Archan worked on mobility management architectures for IP-based cellular networks, including both network-layer (extensions to Mobile IP) and application-layer (extensions to SIP) handoff techniques. His other ongoing research efforts and interests include mobility protocols for next-generation (4G) wireless networks, protocols for high-performance wireless meshes and query middleware for wireless sensor networks. He has published extensively in the areas of wireless networking, congestion control and mobility management and was a co-author on papers that received the Best Paper awards in ACM WOWMOM 2002 and IEEE MILCOM 2001. He serves on the technical program committees of several conferences, such as IEEE INFOCOM and IEEE WOWMOM and is currently the Untethered Technologies chair of the IEEE Computer Society’s Technical Committee on Computer Communications (TCCC). Archan received his Ph.D. in Electrical and Computer Engineering from the University of Maryland at College Park in May, 2000, and his B.Tech in Electronics and Communication Engineering from IIT Kharagpur, India in July 1993. Professional details are available at http://www.research.ibm.com/people/a/archan.

Abstract:
The first half of the tutorial addresses the family of standards that fall under the WiFi forum. It starts by describing the DSSS and OFDM signaling schemes of 802.11b, g and a. It then describes the MAC layer for the same family in its original form which was intended for short range indoor WLAN. The tutorial then addresses recent MAC enhancements and provisioning for outdoor access including: mesh networking, rural communications, long distance point-to-point, fast hand-off and integration with the 2G/3G infrastructure. The second half addresses the group of standards that fall under the WiMax forum which are based on 802.16. We describe the physical layer for various 802.16 systems including 802.16e. Single Carrier, OFDM and OFDMA transmission strategies are discussed with TDD, FDD and MESH framing. The structure of the WiMax MAC layer is described including the data mapping and packet scheduling of OFDMA frames. The expanding range of applications for both 802.11 and 802.16 families is discussed by giving several deployment scenarios.


Prof. Roshdy H.M. Hafez obtained the Ph.D. in Electrical Engineering, from Carleton University, Ottawa, Canada. He joint the Department of Systems and Computer Engineering, Carleton University as an assistant professor, and he is now a full professor.

Dr. Hafez has many years experience in the areas of Wireless communications, RF and spectrum engineering. He has lectured extensively in wireless and related areas. His current research focuses on broadband wireless networking, 3G/4G, wireless over fiber and sensor networks.

He acts as a consultant to Nortel, Industry Canada, CRC, SigproWireless and other telecommunications companies. Between 1994 and 2000 Dr. Hafez was actively involved and lead projects in federal and provincial centers of excellence: TRIO, CITR and CITO. Dr. Hafez gave several tutorials in international conferences and taught many short courses to the industry.
 

Prof. Abbas Yongacoglu has more than 30 years of industrial and academic experience in digital communications. He worked at Marmara Research Institute, Philips Research Labs and Miller Communications Systems. In 1987 he joined the University of Ottawa where he is now a full professor. He has given many short courses to the Canadian Industry and Government on Wireless Communications.

Abstract:
Ultra Wide Band (UWB) radio is, in principle, a physical transmission technique suitable for all kinds of applications. Given the strong power emission constraints imposed by the regulatory bodies in the United States — but likely to be adopted by other countries as well — UWB is emerging as a particularly appealing transmission technique for applications requiring either high bit rates over short ranges or low bit rates over medium to long ranges. The high-bit-rate, short-range case includes wireless personal-area networks (WPANs) for multimedia traffic, cable replacement such as wireless USB and wearable devices like wireless high-fidelity headphones. The low-bit-rate, medium- to long-range case applies to long-range sensor networks such as indoor-outdoor distributed surveillance systems; non-real-time data applications; and in general all data transfers compatible with a transmission rate in the order of 1 Mbit/second over several tens of meters. A recent release of the IEEE 802.15.4 standard for low-rate WPANs has increased attention for the low-bit-rate case. The scenarios of applications mentioned above refer to networks that commonly adopt the self-organizing principle — that is, distributed (ad-hoc) networks. Examples of these networks are ad hoc and sensor networks, such as groups of wireless terminals located in a limited-size geographical area, communicating in an infrastructure-free fashion, and without any central coordinating unit or base station. The main goal of this tutorial is the analysis and discussion of the potentials of Ultra Wide Band (UWB) radio in the design of distributed wireless networks. Fundamental issues related to UWB systems are investigated in order to highlight the potentials of a technology which appears as one of the favourite candidates in the definition of standards for new generation wireless networks. The tutorial will contain innovative material in all respects both regarding the physical layer and upper layers. In particular, attention will focus on the capability provided by UWB to acquire accurate information about node positions in the network, which leads to the definition of flexible and power efficient procedures for both resource management and routing.


Maria-Gabriella Di Benedetto obtained her Ph.D. in Telecommunications in 1987 from the University of Rome La Sapienza, Italy. In 1991, she joined the Faculty of Engineering of University of Rome La Sapienza, where currently she is a Full Professor of Telecommunications at the Infocom Department. She has held visiting positions at the Massachusetts Institute of Technology, the University of California, Berkeley, and the University of Paris XI, France. In 1994, she received the Mac Kay Professorship award from the University of California, Berkeley. Her research interests include speech analysis and synthesis, and digital communication systems. From 1995 to 2000, she directed four European projects for the design of UMTS. Since 2000 she has been active in fostering the development of Ultra Wide Band (UWB) radio communications in Europe. Within the 5th framework, she directs for the Infocom Dept. two European projects (whyless.com and UCAN) aimed at the design and implementation of UWB ad-hoc networks. Within the 6th EU Framework her "Networking with UWB" research group participates in the PULSERS Integrated Project which will integrate UWB research and development in Europe for the next years, and in the LIAISON Integrated Project as regards the application of UWB to location-based services. She
currently also participates in the HYCON network of excellence. Dr. Di Benedetto is co-editor for the IEEE JSAC Special Issue on UWB Radio in
Multi-Access Wireless Communications December 2002) and for the Journal of Communications and Networks Special Issue on Ultra-Wideband
Communications (December 2003). She recently completed the co-edition
of two new books on UWB that will be published by 2006: UWB Communication Systems - A comprehensive overview, with T. Kaiser, D. Porcino, A. Molisch, and I. Oppermann, Hindawi Publishing Corporation, 2005, and Ultra Wideband Wireless Communications with H. Arslan and Z.N. Chen, John Wiley & Sons, Inc., 2006. Dr. Di Benedetto is the co-author with Guerino Giancola of a seminal book on Ultra Wide Band, titled
"Understanding Ultra Wide Band Radio Fundamentals" that was published
by Prentice Hall in June 2004.

Guerino Giancola received the “Laurea” degree (magna cum laude)
in Telecommunications Engineering, and the Ph.D. degree in Information and Communication Engineering from University of Rome La Sapienza, in 2001 and 2005, respectively. He is currently a research affiliate at the
INFOCOM Department of the University of Rome La Sapienza, Rome, Italy. His research interests include the analysis and modelling of Multi User Interference in Impulse Radio systems, and the design of Medium Access Control functions and protocols for UWB ad-hoc networks. Guerino
Giancola recently co-authored with Maria-Gabriella Di Benedetto a book
on Ultra Wide Band from radio to the network, titled "Understanding
Ultra Wide Band Radio Fundamentals" and published by Prentice Hall in
June 2004. He is currently involved in the European project “PULSERS – Pervasive Ultra wideband Low Spectral Energy Radio Systems” and in
the European Network of Excellence “HYCON−Hybrid Control: Taming Heterogeneity and Complexity of Networked Embedded Systems”. Guerino Giancola is a member of CNIT (Consorzio Nazionale Interuniversitario per le Telecomunicazioni) and of the IEEE Communication Society.

Abstract:
The existing wireless systems standards are diverse and include those of 2.5G, 3G, 3.5/4G, Bluetooth, WirelessLAN, and WiMAX. In the wide area network distance range, 2.5G and 3G wireless converges voice and data to a broadband wireless data network to serve multimedia applications. In the local-area-network intermediate distance range, the lower cost WirelessLAN has been growing very fast all over the world. In the personal-area-network short distance range, the even lower cost Bluetooth network is enabling many more wireless applications. In the metropolitan-area-network distance range, WiMAX is growing rapidly. In moving to emerging 4G wireless systems, the existing wireless systems need to interwork together. A high level understanding of all these networks is presented to enable one to understand how these different systems fit together and converge with the wireline systems.

H Anthony Chan received his PhD in physics at University of Maryland, College Park in 1982 and then continued post-doctorate research there in basic science. After joining the former AT&T Bell Labs in 1986, his work moved to industry-oriented research in areas of interconnection, electronic packaging, reliability, and assembly in manufacturing, and then moved again to network management, network architecture and standards for both wireless and wireline networks. He had designed the Wireless section of the year 2000 state-of-the-art Network Operation Center in AT&T. He was the AT&T delegate in several standards work groups under 3rd generation partnership program (3GPP). During 2001-2003, he was visiting Endowed Pinson Chair Professor in Networking at San Jose State University. In 2004, he joined University of Cape Town as professor in the Department of Electrical Engineering. He has taught different courses in wireless networks and in network convergence.
Prof. Chan is distinguished speaker of IEEE CPMT Society and is in the speaker list of IEEE Reliability Society since 1997.

Abstract:
Multiple-Input Multiple Output (MIMO) technology has emerged, in the last decade, as a powerful means of increasing the performance of wireless communication systems. Research on this relatively new technology has penetrated in a substantial way many fields, ranging from signal processing to communication theory and channel modeling. Equally importantly, MIMO technology has rapidly made its way into current and next generation communication standards and systems. This tutorial presents a comprehensive overview of the theory that underlies MIMO communication as well as a perspective of how it is already impacting emerging commercial systems. The tutorial is organized in 3 distinct parts. In the first part, we establish the necessary basics: information-theoretic fundamentals, modeling of fading channels, transceiver architectures, diversity, space-time coding, and channel estimation. In the second part, we examine more advanced topics: diversity vs. multiplexing trade-off, coherence vs. noncoherence, precoding and optimum signaling, and multiuser MIMO (uplink, downlink and intercell). In the third and final part, we illustrate some of the applications that MIMO is finding in cellular systems and wireless LANs, and we anticipate other exciting applications that are forthcoming.


Angel Lozano (IEEE S'90, M'99, SM'02) was born in Manresa, Spain, in 1968. He received the Engineer degree in telecommunications (with honors) from the Polytechnical University of Catalonia, Barcelona, Spain, in 1992 and the Master of Science and Ph.D. degrees in Electrical Engineering from Stanford University, Stanford, CA, in 1994 and 1998 respectively. Between 1996 and 1998 he worked for Pacific Communication Sciences Inc. and for Conexant Systems in San Diego, CA. Since

Constantinos Papadias was born in Athens, Greece, in 1969. He received the diploma of electrical engineering from the National Technical University of Athens (NTUA) in 1991 and the Ph.D. degree in signal processing (highest honors) from the Ecole Nationale Supérieure des Télécommunications (ENST), Paris, France, in 1995. From 1992 to 1995, he was Teaching and Research Assistant at the Mobile Communications Department, Eurécom, France. In 1995, he joined the Information Systems Laboratory, Stanford University, Stanford, CA, as Post­Doctoral Researcher, working in the Smart Antennas Research Group. In November 1997 he joined the Wireless Research Laboratory of Bell Labs, Lucent Technologies, Holmdel, NJ, as Member of Technical Staff and was later promoted to Technical Manager. He has authored several papers, patents and standards contributions and he received the IEEE Signal Processing Society’s 2003 Young Author Best Paper Award. He participates in several research projects within the European Commission’s Information Society Technologies (IST) program and represents Lucent Technologies at the steering board of the Wireless World Research Forum (WWRF). He is guest co-editor of a special issue on MIMO Communications and Signal Processing of the EURASIP Journal on Applied Signal Processing, as well as an upcoming book on MIMO systems. He is a member of the Signal Processing for Communications Technical Committee of the IEEE Signal Processing Society and Associate Editor for the IEEE Transactions on Signal Processing. Dr. Papadias is a Senior Member of IEEE and a member of the Technical Chamber of Greece.

Abstract:
Simple calculations indicate that the provision of very high data rates, beyond small pockets, is not feasible with the conventional wireless network architectures. Even the recent advances in antenna technologies (such as smart antennas and MIMO systems) and signal processing techniques (such as advanced channel coding methods) do not seem to be sufficient to alleviate the tremendous potential stress that will be incurred on the link budget in future wireless networks with the aggregate rates of 100 – 1000 Mbps. Towards that end, the augmentation of the current networks with the multihop capability is considered to be the most feasible architectural upgrade to facilitate almost ubiquitous high data rate coverage in the most cost-effective manner. In this context, there has been growing interest in both academia and industry in the concept of relaying in infrastructure-based wireless networks such as next generation cellular (B3G, 4G), WLAN (WiFi, HiperLAN2), and broadband fixed wireless (802.16, WiMax, HiperMAN) networks. Multihop communications can be facilitated through the use of low-power/low-cost fixed relays deployed by the service provider, or through other wireless terminals in the network. This tutorial will present the concept of relaying in infrastructure-based networks, with its fundamental dynamics, potentials and limitations. The tutorial will cover physical layer issues (including novel diversity techniques, virtual antenna arrays, and cooperative relaying), systems level issues (including multiple access, ARQ, radio resource management, coverage, capacity, and throughput) and networking issues (including intelligent routing, load balancing, and handoff).

Halim Yanikomeroglu was born in , Turkey, in 1968. He received a B.Sc. degree in Electrical and Electronics Engineering from the Middle East Technical University, Ankara, Turkey, in 1990, and an M.A.Sc. degree in Electrical Engineering (now ECE) and a Ph.D. degree in Electrical and Computer Engineering from the University of Toronto, Canada, in 1992 and 1998, respectively. Dr. Yanikomeroglu was with the Research and Development Group of Marconi Kominikasyon A.S., Ankara, Turkey, from January 1993 to July 1994. Since 1998 Dr. Yanikomeroglu has been with the Department of Systems and Computer Engineering at Carleton University, Ottawa, where he is now an Associate Professor with tenure. His research interests include almost all aspects of wireless communications with a special emphasis on infrastructure-based multihop/mesh/relay networks. At Carleton University, he teaches graduate courses on digital, mobile, and wireless communications.
Dr. Yanikomeroglu has been involved in the steering committees and technical program committees of numerous international conferences in wireless communications; he has also given several tutorials in such conferences. He was the Technical Program Co-Chair of the IEEE Wireless Communications and Networking Conference 2004 (WCNC'04). He was an Editor for during 2002-05, and a guest editor for ; he was an Editor for IEEE Communications Surveys & Tutorials for 2002-03. Currently he is serving as the Chair of the IEEE Communications Society’s Technical Committee on Personal Communications (TCPC), he is also a member of IEEE ComSoc’s Technical Activites Committee (TAC). He is a member of the Advisory Committee for Broadband Communications and Wireless Systems (BCWS) Centre at Carleton University. Dr. Yanikomeroglu is a registered Professional Engineer in the province of Ontario, Canada.

Abstract:
IPTV, or, Television over IP, is generating huge interest in the telecom industry lately. Telecom service providers (Telcos) view IPTV as a ticket to compete against the Cable industry by offering television services over Fiber/DSL lines. By offering video over their access infrastructure, Telcos hope to match the voice, video and data (“triple-play”) offering of Cable providers. However, unlike Cable television (CATV) systems that are typically analog transmissions on a broadcast medium, IPTV architectures deliver digital television using IP-multicast over point-to-point hybrid Fiber/DSL infrastructure. Unlike the more mature CATV infrastructure, IPTV leverages the most recent advances in networking and video compression technologies that while enabling more efficient networks, is also causing Telcos growing pains in field deployments.

Swarup Acharya is a Technical Manager in the Integrated Networks Research Department at Bell Labs. He received his Ph.D. from Brown University and a B.Tech (Hons.) from Indian Institute of Technology, Kharagpur. He performs research on IPTV and next-gen access, data and optical networking, network management and mobile computing. He has published extensively in those areas, authoring some of the most frequently cited papers in mobile database systems. He also has more than 25 patents approved, or pending, with the USPTO. Dr. Acharya actively collaborates with Lucent business units to transform his research into market-differentiating products. Dr. Acharya is an experienced speaker having presented to both technical and non-technical audiences including conferences, tradeshows, panels and Lucent customer meetings. His presentation at the MPLS 2004 tradeshow was one of the top-rated talks. He recently was awarded the Speaker of the Year award for 2005 by the IEEE New Jersey Coast section for his presentation on “MPLS Network Tuning: How to Get Most from Your Network”. He is also an invited speaker at the IEEE Bandwidth Management workshop next month. His CV listing his various speaking engagements to date is available from his home page.

Anurag Srivastava received his B.E (E.E) degree from University of Gorakhpur, India and M.S (Comp Sc.) from Indian Institute of Science, Bangalore in1997 and 1999 respectively. He has been working as Member of Technical Staff at Integrated Networks Research department of Bell Labs, Lucent Technologies since 2000. His research interests are in the area of video delivery over IP networks, location based technologies in wireless networks, MPLS and SONET/SDH protocols, and in solving complex routing and optimization problems in communication networks. His research work on location-based technologies was featured on NBC and over twenty affiliate stations in 2004. He has over 10 patents awarded or pending and several research papers to his credit.
He has spoken at several major telecom conferences and presented his research work in industry trade shows. Recently, he gave a tutorial at the IEEE Sarnoff Symposium 2005 on the Video over Next-generation DSL Networks: Challenges and Opportunities. Most recently, he demonstrated his research work on "Universal IPTV: Anywhere, Anytime, Any device" at Supercomm 2005 in Chicago.

Abstract:
Wireless multimedia communication devices are becoming ever more powerful and sophisticated, as seen on television. Nonetheless, the provision of realistic “tele-presence” services requires a further quantum leap from the current state-of-the-art represented by the popular mobile telephone. Based on the presenters monographs and papers () [1]-[8] he recent advances in this challenging field are reviewed, commencing with a portrayal of the related multimedia source codecs, advanced channel codecs and burst-by-burst adaptive modems, such as those used by the High-Speed Downlink Packet Access (HSDPA) mode of the third-generation (3G) wireless systems, including space time codecs and other MIMO systems.
Commencing with a review of the Shannonian information-theoretic design principles, powerful system design examples will be presented, which are capable of approaching the channel capacity. The limitations of the Shannonian lessons in the context of realistic fading, rather than Gaussian channels will be detailed. To elaborate a little further, most multimedia source signals are capable of tolerating lossy, rather than lossless delivery to the human eye, ear and other human sensors. The corresponding lossy and preferably low-delay multimedia source codecs however exhibit unequal error sensitivity, which is not the case for Shannon’s ideal entropy codec. Numerous jointly optimised turbo transceiver designs capable of providing unequal error protection for MPEG-4 coding aided wireless video telephony and audio transmission will be highlighted, which exhibit a performance close to the channel capacity. Sophisticated multi-stage iterative detectors will be studied, which exchange extrinsic information across several detection stages, including Space-Time Trellis Coding (STTC) invoked for the sake of mitigating the effects of fading, as well as bandwidth efficient Turbo Trellis Coded Modulation (TCM) or Bit-Interleaved Coded Modulation (BICM). These multistage turbo systems require the employment of the powerful iterative receiver design tools referred to as three-dimensional (3D) Extrinsic Information Transfer (EXIT) Charts.


Lajos Hanzo received his first-class Master degree in electronics in 1976, his PhD in 1983 and his Doctor of Sciences (DSc) degree in 2004. He is a Fellow of the Royal Academy of Engineering (FREng). During his career in Telecommunications he has held various research and academic posts in Hungary, Germany and the UK. Since 1986 he has been with the School of ECS, University of Southampton, UK, where holds the Chair in Telecommunications. He co-authored 11 books [1]-[10] totalling 8000 pages on mobile radio communications, published in excess of 500 research papers, organised and chaired conference sessions, presented overview lectures and has been awarded a number of distinctions. Currently he heads an academic research team, working on a range of research projects in the field of wireless multimedia communications sponsored by industry, the Engineering and Physical Sciences Research Council (EPSRC) UK, the European IST Programme and the Mobile Virtual Centre of Excellence (VCE), UK. He is an enthusiastic supporter of industrial and academic liaison and he offers a range of industrial courses. Lajos is also an IEEE Distinguished Lecturer of both the Communications as well as the Vehicular Technology Society and a Fellow of both the IEE and IEEE. For further information on research in progress and associated publications please refer to http://www-mobile.ecs.soton.ac.uk;

Abstract:
Recently, Voice over IP (VoIP) applications have been very popular in the area of communications protocol development. The call control protocol for VoIP applications is the Session Initiation Protocol (SIP). As defined in RFC 3261, SIP specification is written in English, with several call flow examples shown in accompanying standards such as RFC 3665 for supplementary services of hold, conference, etc. In general, due to its informal nature, the specifications of SIP procedures are intended to be examples for SIP developers and hence represent only a limited set of functionality.

The expected behavior of VoIP implementations, combined with complex timing requirements for TCP and UDP transports, make modeling SIP procedures a challenge. This tutorial will present finite state machine (FSM) and extended FSM (EFSM) models (represented in SDL) for various SIP services such as basic call setup, registration, conference, hold and transfer. These models will then be studied for their suitability for automated test generation methods. The models will then be re-visited to be modified for automated test generation purposes.

The tutorial will also present an evaluation of standardized tests for SIP implementations (e.g., ETSI), and commercial test generation and execution tools for SIP testing. The tutorial will conclude with guidelines for developers and testers.

A live demo for test generation and execution will be setup using the SIP phones from Avaya.

Dr. Uyar is currently with the City College and the Graduate Center
of the City University of New York. Dr. Uyar's interests include testing and reliability of computer and communication networks and protocols. Dr. Uyar was a Co-Principal Investigator for two multi-million dollar grants from the U.S. Army Research Labs, awarded to the City University of New York.

He was a Distinguished Member of Technical Staff at AT&T Bell Labs
until 1993, where he received a Vice Presidential Quality Award for co-designing software tools, three AT&T Bell Labs Vice Presidential Research Appreciation Awards, and a Best Paper Award in AT&T Electronic Testing Conference. He was granted "Docent" title by the National University Council of Turkey in 1992. He was the co-chair of the 18th IFIP Int'l. Conf. on Testing of Communicating Systems (Testcom 2006), 6th Int'l. Conf. on Formal Description Techniques (Forte 1993), and the 12th Int'l. Symp. on Protocol Specification, Testing and Verification (PSTV 1992), He co-edited the book titled "Conformance Testing Methodologies and
Architectures for OSI Protocols," published by the IEEE Computer Society Press. Dr. Uyar holds three U.S. patents.

Dr. Uyar has a B.S. degree from Istanbul Teknik Universitesi, and M.S. and Ph.D. degrees from Cornell University, Ithaca, NY, all in Electrical Engineering.

Mr. Allen received his M.S. degree from Purdue University, Indiana, in 1978, in Engineering Sciences, with a specialization in Large Scale Integer Programming.

Mr. Allen's career spans an extensive industrial experience in developing, testing and verifying industrial telephony applications in AT&T Bell Labs, Lucent, and currently at Avaya.

While in Bell Labs, he received the Distinguished Member of Technical Staff Award. In 1988 he was promoted to management and has since managed teams responsible for developing and testing ISDN telephones, digital telephones, and IP Telephones.

In Avaya, he recently led in the creation of a global team, specializing testing and verification of Avaya telephones. The latest work of the team is in the development automated methods for the testing of Avaya SIP Telephones. The team was recognized with an Avaya Quality award on 16 August, 2005 for this work.

Mr. Allen's current assignment is management of the development of a new Avaya telephone product.

Mr. Allen holds two U.S. patents in the field of telephone design.

Ms. Somers' extensive industrial experience includes product deployment, systems engineering, and system testing and verification of
industrial telephony applications in AT&T Bell Labs, Lucent, and,
currently, at Avaya.

Ms. Somers has twice been the recipient of the Bell Labs Extraordinary
Contribution Award and once the Avaya Cup Award. Currently, she is the leader of a twelve person team specializing in testing automation and verification of Avaya Telephones. The recent work of her team has focused upon the verification of Avaya SIP Telephones.

Ms. Somers received her M.S. degree from Stevens Institute of Technology, Hoboken, New Jersey, in Computer Science.

Abstract:
Wireless IP networks are becoming an integral part of the next generation ubiquitous computing environment. The marriage between cellular and IP networks along with the evolution of third and fourth generation networks will enable users to realize the concept of anywhere and anytime Internet connection whether based on 802.11 LANS in enterprise networks and public hot spots or WANS (e.g., GPRS, WCDMA, CDMA2000, UMTS, WiMAX, etc.). Among several other issues, security is a major concern for users as well as operators in wireless IP networks in particular, converged wireless IP networks. While some security concerns are similar to those of wireline IP networks, many are inherent to the underlying wireless access networks that are open to intruders and attackers. As a result many current solutions for similar problems in wireline IP networks are not extensible to wireless environments. This is in addition to the several new vulnerabilities introduced on account of the wireless access links. Moreover, wireless networks and devices have several constraints such as low and expensive bandwidth, battery power, intermittent connectivity, etc. This tutorial will focus on security issues and challenges in next generation converged wireless IP networks. We will first present the basics of WLAN, WiMAx and 3G networks security and explain why conventional security solutions and architectures are inappropriate and infeasible in converged wireless IP networks. Then we will address the vulnerabilities, threats, and attacks that are possible in such networks (both WLAN, WiMAX, 2G/3G and IMS networks). We will discuss various mechanisms and protocols used in WLAN, WiMAX and 3G networks including IMS such as WEP, WPA, TKIP, CCMP, 802.1X,, EAP-AKA, PKM, and Kasumi. We will also emphasize the weaknesses and countermeasures of existing solutions and highlight the research issues and open challenges.

Subir Das has been a Senior Scientist in Mobile Networking research department, Telcordia Technologies Inc. since 1999. Dr. Das received his PhD in Computer Engineering from E & ECE Department, Indian Institute Technology, Kharagpur, India. During 1997-99, Dr. Das was a faculty member in the same Department where he had supervised four MS students and one doctoral student. Dr. Das was a Principal Investigator of an Army Research Laboratory (ARL) sponsored project on Secure, Dynamic Ad Hoc Networking. He was a member of the TPC of several conferences, IEEE Sarnoff 2004/2005, Percom 2003, VTC 2003, and WoWMoM 2000/2001/2002. He is reviewer of Mobicom 2003/2004, Infocomm 2003, ICC 2002/2003, Globecom 2002/2003, IEEE JSAC, TMC, and Wireless Communication. He has published more than forty papers in the area of wireless networking. Dr. Das has three US patents to his credit and twelve applications are pending. He is a lead contributor to IEEE and IETF Standards. He was the co-chair of IETF PANA WG. His current research interests include mobility management in 3G wireless access systems, security in wireless IP networks, auto-configuration and security of ad hoc, mobile networks, and wireless multimedia.

Farooq Anjum is a Senior Scientist in Telcordia Technologies. Farooq finished his PhD from the University of Maryland at College Park and has been with Telcordia ever since. His current research interests include security in wireless networks, middleware technologies and call control. He has been very active in the area of wireless security. He is a member of the TPC of several conferences such as as IEEE Mobicom 2005/2004, DSSNS 2006, WoWMoM 2006, WCNC 2005, WirelessCom 2005, Mobiquitous 2006, sponshorships chair of SecureComm 2005, publication chair of Securecomm 2006, finance chair of WiOpt 2006 and a panel organizer on security at IEEE SECON 2006. He is also a lead guest editor of IEEE JSAC sp. issue on security in wireless ad hoc networks as also an associate editor of IEEE WCMC and IEE Proc. Information Security. He is also an adjunct professor at Stevens Institute of Technology and Univ. of Pennsylvania where he has been teaching graduate courses in the area of network security.

Abstract:
Achieving reliable high-speed data transmission over wireless links is a challenging task due to multipath fading and interference from other users. The single most effective technique to combat such adverse effects is to introduce diversity into the system. There are many different diversity techniques including temporal, frequency, and spatial diversity. Furthermore, different diversity techniques may be combined to enhance the performance of the wireless system. Space-time coding, a new coding paradigm suitable for multiple antenna systems, is a successful example that combines temporal diversity (through channel coding) and spatial diversity (through multiple transmit and receive antennas). This tutorial gives a complete overview of the various emerging space-time coding techniques. These include space-time trellis codes, space-time block codes, turbo codes, and concatenated codes with iterative decoding, among others. The tutorial focuses on the construction and performance analysis of such coding schemes over various wireless channels. In addition, it addresses information theoretical limits for multi antenna systems over wireless channels. Participants will also see comparisons between these coding schemes in terms of performance and complexity. In addition, several practical space-time coding architectures such as BLAST and its variants will be described. Other practical issues such as antenna selection at the transmitter and/or receiver and the effects of sub-channel correlation on the system performance will also be considered.

Tolga M. Duman received the B.S. degree from Bilkent University in 1993, M.S. and Ph.D. degrees from Northeastern University, Boston, in 1995 and 1998, respectively, all in electrical engineering. In August 1998, he joined the Electrical Engineering faculty of Arizona State University where he is currently an associate professor. Dr. Duman's current research interests are in digital communications, wireless and mobile communications, channel coding, turbo codes, coding for recording channels, and coding for wireless communications. Dr. Duman published about 30 journal papers and 60 refereed conference papers in these areas. He is a recipient of the National Science Foundation CAREER Award, IEEE Third Millennium medal, and IEEE Benelux Joint Chapter best paper award (1999). He is a member of the IEEE Information Theory and Communication Societies. He co-instructed technical tutorials on coding for MIMO systems at IEEE Globecom 2003 and IEEE WCNC 2004 and IEEE ICC 2005.

Ali Ghrayeb received the Ph.D. degree in electrical engineering from the University of Arizona, Tucson, AZ, in May 2000. From 2000 to 2002, he was an Assistant Professor in the Electrical Engineering Department at the American University of Sharjah, UAE. Since August 2002, he has been with the Department of Electrical and Computer Engineering, Concordia University, Montreal, Canada, where he is an Assistant Professor. His research interests include digital and wireless communications, channel coding, turbo codes, space-time codes, linear and nonlinear equalization, and coding for data transmission and storage. He has published over 50 refereed technical papers in the above research areas. He served/is serivg on the Technical Program Committee of several IEEE conferences, including VTC 2003/2004, ICC 2004/2004, and PIMRC 2003/2004. He co-instructed technical tutorials on coding for MIMO systems at IEEE Globecom 2003, IEEE WCNC 2004, and IEEE ICC 2005.

Abstract:
Next Generation IP-based Networks will offer Quality of Service (QoS) guarantees by deploying technologies such as Differentiated Services (DiffServ) and Multi-Protocol Label Switching (MPLS) for traffic engineering and network-wide resource management. Despite the progress already made, a number of issues still exist regarding edge-to-edge intra-domain and inter-domain QoS provisioning and management. This tutorial will start by providing background on technologies such as DiffServ, MPLS and their potential combination for QoS support. It will subsequently introduce trends in Service Level Agreements (SLAs) and Service Level Specifications (SLSs) for the subscription to QoS-based services It will then move to examine architectures and frameworks for the management and control of QoS-enabled networks, including the following aspects: approaches and algorithms for off-line traffic engineering and provisioning through explicit MPLS paths or through hop-by-hop IP routing; approaches for dynamic resource management to deal with traffic fluctuations outside the predicted envelope; a service management framework supporting a “resource provisioning cycle”; the derivation of expected traffic demand from subscribed SLSs and approaches for SLS invocation admission control; a monitoring architecture for scalable information collection supporting traffic engineering and service management; and realization issues given the current state-of-the-art of management protocols and monitoring support. The tutorial will also include coverage of emerging work towards inter-domain QoS provisioning and relevant industrial activities such as IPsphere. In all these areas, recent research work will be presented, with pointers to bibliography and a specially tailored Web page with additional resources.

Prof. George Pavlou holds the Chair of Communication and Information Systems at the Center for Communication Systems Research, Dept. of Electronics Engineering, University of Surrey, UK, where he leads the activities of the Networks Research Group (). He received a Diploma in Engineering from the National Technical University of Athens, Greece and MSc and PhD degrees in Computer Science from University College London, UK. His research interests encompass network and service management, network planning and dimensioning, traffic engineering, quality of service, mobile ad hoc networks, service engineering, multimedia service control and management, code mobility, programmable networks and communications middleware. He is the author or co-author of over 120 papers in fully refereed international conferences and journals and has contributed to 4 books. He has also contributed to standardization activities in ISO, ITU-T, TMF and IETF. He was the technical program co-chair of IEEE/IFIP Integrated Management 2001 and he is co-editor of the bi-annual IEEE Communications Network and Service Management series. See also for additional information and his publications in PDF.

Abstract:
The adoption of multiple-input multiple-output (MIMO) techniques in wireless communications systems is fueled by the promises of high spectral efficiency and robustness to multipath fading. A key component of a MIMO system is the MIMO detector at the receiver, whose job is to recover the symbols that are transmitted simultaneously from multiple transmitting antennas. In practical applications, the MIMO detector is often the bottleneck for both performance and complexity.

This tutorial presents the basic principles of MIMO detection. We describe the fundamental problem, and present an overview of MIMO techniques that are used in practice. These include linear detection techniques, such as the zero-forcing and minimum-MSE detectors. We will provide several views of the decision-feedback detector, including the nulling-and-cancelling view, the matrix view, the Gram-Schmidt view, the whitened-matched filter view, and the linear-prediction view. We will compare the ZF and MMSE versions of these detectors. We will also describe multistage detectors and tree-based detectors like the sphere detector and its variations, as well as lattice-aided detectors. The impact of ordering on performance and complexity will be described.

This tutorial will not only provide an overview of MIMO detection but also introduces the current research results in this area.

Dr. John R. Barry received the M.S. and Ph.D. degrees from the University of California at Berkeley in 1987 and 1992, respectively, both in electrical engineering. Since 1985 he has held engineering positions in the fields of communications and radar systems at Bell Communications Research, IBM T.J. Watson Research Center, Hughes Aircraft Company, and General Dynamics. He is a frequent author and instructor in the field of MIMO communications. He is a coauthor of Digital Communication, Third Edition, Kluwer, 2004, and the author of Wireless Infrared Communications, Kluwer, 1994. He received the 1992 David J. Griep Memorial Prize and the 1993 Eliahu Jury Award from U.C. Berkeley, a 1993 Research Initiation Award from NSF, and a 1993 IBM Faculty Development Award. He joined the Georgia Tech faculty in 1992, where he is an associate professor with the School of Electrical and Computer Engineering. Currently he is visiting the Georgia Tech Lorraine campus in Metz, France.

Abstract:
Recently, the ubiquitous computing and communication receives much attention due to its promising new business opportunity in IT and other related areas. In a ubiquitous environment, the surrounding contextual information acquired from sensors, GPS, and people plays very important role for the intelligent decision making process. Ubiquitous computing and communication (UCC) are characterized by the invisibility of objects, proactive context-awareness and adaptation, mobility and ubiquitous sensor network. This is currently very hot research area, and there have been lots of research works going on throughout the world. The ubiquitous environment requires a new paradigm of management which may include ubiquitous interface management, surrounding context management, convergence management, location management and power management in addition to the traditional network management technologies. In this tutorial, we introduce the current research issues and efforts of the management of UCC. In particular, we focus on the management of ubiquitous sensor network (USN), introducing the requirements of the USN management, and describing the management architecture and management functional areas. In addition to these technical issues, the issues related to security and standard will be also discussed.

Jong-Tae Park is a professor of the School of Electrical Engineering and Computer Science at Kyungpook National University, Korea. He received the Ph.D. degree in Computer Science and Engineering from the University of Michigan and previously worked at AT&T Bell Labs in the United States. He has founded the Committee of Korean Network Operations and Management (KNOM) in the Korean Institute of Communication Sciences and was one of the founding members of Asia-Pacific Symposium on Network Operations and Management (APNOMS). He served as a chair of the Technical Committee of Information Infrastructure of IEEE Communication Society. He is currently on the editorial board of International Journal on Network and Systems Management, China Communications, and a standing committee member for APNOMS. He was a general chair for APNOMS97, a general chair for ICC 2002 Symposium and a co-chair for Globecom2002 Symposium on Global Service Portability and Infrastructure. He has also served as a committee member or advisory board member for IEEE/IFIP NOMS and IM. He has published more than 100 journals and articles in the areas of computer communication networks, network management, and distributed systems. His current research interests include issues related to the control and management of next generation information networks including MPLS/GMPLS, 4G and ubiquitous sensor networks. He is also interested in the development of real-time location system using active RFID technology, and mobile RFID middleware, and the wireless multimedia Internet applications. He is an IEEE senior member.

Abstract:
WIreless MEsh NETworks (WIMENETs) are composed of several wireless routers that provide multihop communication paths between wireless clients as well as facilitate connection to the wide area network and the Internet. The wireless routers are mostly stationary while the client nodes may be stationary or mobile. WIMENETs can be used as a very low-cost local area network because of the avoidance of the installation costs of wired infrastructure. These networks will not only be useful for applications that are supported by wireless local area networks or mobile ad hoc networks, but also will have scope for usage in providing Internet access to various community networks, enterprise networks, and home networks. WIMENETs can be deployed strategically or in an ad hoc manner. Recently, WIMENETs have become a very active area of research, which is being pursued by both academia and industry. Several test-bed and experimental deployments are already in place. The low cost of deployment makes it very attractive in the commercial arena. Considering the interests and activities in the areas of WIMENETs, it may be useful to grasp an in-depth view of these networks in terms of their organization, applications, protocols, and unsolved problems. This tutorial will provide a comprehensive study of various issues in WIMENETs

Prof. Prasant Mohapatra received his Ph.D. in computer engineering from the Pennsylvania State University in 1993. He was an assistant professor and then an associate professor at Iowa State University from 1993 to 1999, and then at Michigan State University till 2001. Since then he has been at University of California, Davis, where he is currently a Professor in the Department of Computer Science.

Dr. Mohapatra has published extensively in various international journals and conferences. He has been an invited speaker at several universities and other organizations in several countries. He has given several tutorials in various international venues, and has taught several advanced courses in computer networks, wireless networks, performance evaluation, and multimedia systems. His research work has been funded and collaborated by National Science Foundation, SIEMENS, EMC Corporation, Panasonic Technologies, Hewlett Packard, Rockwell International, and Intel Corporation.

He was/is on the editorial board of the IEEE Transactions on computers, ACM WINET, and Ad Hoc Networks. He has been on the program  / organizational committees of several international conferences. He was the Program Vice-Chair of INFOCOM 2004 and MASS 2004, and the Program Co-Chair of the First IEEE International Conference on Sensor and Ad Hoc Communications and Networks (SECON 2004). He is also the Co-Chair of the First IEEE Workshop on Wireless Mesh (WiMesh 2005). He has been a Guest Editor for IEEE Network, IEEE Transactions on Mobile Computing, and the IEEE Computer.

Abstract:
With recent advances in WDM technology, the amount of bandwidth available on a single fiber has dramatically increased. However, today’s electronically packet- switched backbones cannot fully use this bandwidth due to the electronics bottleneck at the routers and switches. One method to overcome this bottleneck is to move to optical circuit switching based on wavelength routing for which an optically-switched wavelength path is established between a source and destination at the expense of reduced statistical multiplexing gains. Optical Burst Switching (OBS) has recently been proposed as an alternative and viable optical switching technology, which is based on burstification of data to cope with current optical switching speeds and also the concept of separation of data and control planes, whereby data is optically switched and control plane remains electronical. This tutorial is prepared to exhibit the view of the European Network of Excellence e-Photon/ONe as well as the state-of-the-art research carried out by the e-Photon/ONe researchers on optical burst switching systems and networks.

Dr. Nail Akar received his B.S. degree from Middle East Technical University, Turkey, in 1987 and M.S. and Ph.D. degrees from Bilkent University, Turkey, in 1989 and 1994, respectively, all in electrical and electronics engineering. From 1994 to 1996, he was a visiting scholar and a visiting assistant professor in the Computer Science Telecommunications program at the University of Missouri-Kansas City during which he focused on performance evalation methodologies for telecommunication networks and queueing systems. In 1996, he joined the Technology Planning and Integration group at the Long Distance Division, Sprint, where he held a senior member of technical staff position from 1999 to 2000. While at Sprint, Dr. Akar’s research concentrated on ATM, IP/MPLS, and optical network infrastructures, Quality of Service and virtual private networking. In the same time frame, Dr. Akar pursued several research projects on ATM and IP networking with Sprint’s research partners including MIT, University of Kansas and SRI. Since 2000, Dr. Akar has been with Bilkent University, Ankara, Turkey as an assistant professor. He was the national representative in the European COST Action 279 “Analysis and design of advanced multiservice networks supporting mobility, multimedia, and internetworking” which was recently completed in Summer 2005. Dr. Akar is also actively involved in the Commission of the European Community IST-FP6 NoEs (Network of Excellence) E-Photon/One and NEWCOM. Dr. Akar’s current research interests include performance analysis of computer and communication networks, design, engineering, and analysis of optical burst/packet switching systems and networks, network control and dynamic resource allocation, and multimedia networking.
 

Dr. Ezhan Karasan received B.S. degree from Middle East Technical University, Ankara, Turkey, M.S. degree from Bilkent University, Ankara, Turkey, and Ph.D. degree from Rutgers University, Piscataway, New Jersey, USA, all in electrical engineering, in 1987, 1990, and 1995, respectively. During 1995-1996, he was a post-doctorate researcher at Bell Labs, Holmdel, New Jersey, USA. From 1996 to 1998, he was a Senior Technical Staff Member in the Lightwave Networks Research Department at AT&T Labs-Research, Red Bank, New Jersey, USA. He has been with the Department of Electrical and Electronics Engineering at Bilkent University since 1998, where he is currently an associate professor. During 1995-1998, he worked in the Long Distance Architecture task of the Multiwavelength Optical Networking Project (MONET), sponsored by DARPA. Dr. Karasan is currently the Bilkent team leader of the FP6-IST Network of Excellence (NoE) project e-Photon/ONe (2004-2006) and he also participates in FP6-IST NoE Newcom (2004-2006) as a researcher. He was also a member of the European COST 279 action “Analysis and Design of Advanced Multiservice Networks supporting Mobility, Multimedia, and Internetworking” (2001-2005). Dr. Karasan is a member of the Editorial Board of Optical Switching and Networking journal. He is the recipient of 2004 Young Scientist Award from Turkish Scientific and Technical Research Council (TUBITAK). He also received a Career Grant from TUBITAK in 2004. Dr. Karasan received a fellowship from NATO Science Scholarship Program for overseas studies in 1991-94. His current research interests are in the application of optimization and performance analysis tools for the design, engineering and analysis of optical networks and wireless ad hoc/sensor networks.