T1. Trends in R&D of Software Reconfigurable Radio

Dr. Ryuji Kohno, Yokohama National University, Japan

Software radio, software reconfigurable radio, or software defined radio (SDR) is an attractive field of research in terms of theoretical cross-over research themes between radio engineering and computer science in academia as well as new multi-standard or all-purpose radio system products in industry. In order to promote research and development in the field of SDR, this tutorial briefly introduces some prospective aspects and research themes of SDR. There are many approaches to research SDR such as architectures, devices, algorithms, description languages, API, secure protocol and authentication for achieving reconfigurability and downloadability in an SDR system. In particular, R&D activities of IEICE technical group on SDR will be introduced in detail including various prototypes of SDR systems, which have been recently implemented in Japan, such as NTT, SONY CSL and so on. Topics include:

T3. Mobile Pervasive Ad Hoc Networking - The Next Frontier

Dr. C. K. Toh, TRW, USA

This tutorial addresses fundamental issues in ad hoc mobile wireless networking and how this relates to pervasive mobile networks, Bluetooth, and WAP. It provides a quick introduction to the principles of ad hoc mobile networking, followed by coverage on advance topics such as media access methods, TCP over ad hoc, service discovery in an ad hoc environment, implementation of ad hoc routing, and performance issues. The implementation and performance section would be useful to practicing engineers, consultants, researchers, etc., who wanted to gather technical know-how of implementing and evaluating such networks. Application and wireless hardware developers would be interested to know the communication performance attainable in such networks. This half-day tutorial aims to address these, possibly coupled with video shots of ad hoc communications of a working testbed in the field. Topics include:

T5. Mobile Internet and Next Generation Wireless Networks

Dr. Abbas Jamalipour, University of Sydney, Australia

This tutorial provides audiences with the state-of-the art information on the third generation wireless networks and beyond including trends in new era of wireless telecommunications, standardization activities, global network harmonization, and all-IP network. Topics for discussion include the importance of traffic management, mobility and location management, protocol enhancement for interworking of heterogeneous wired and wireless networks, and the quality of service in future generations of wireless networks. The tutorial also covers the role of satellites in providing global inter-network capability and the wireless ATM toward future wireless networks, in order to fill the gap between the traditional packet-switched networks and the emerging IP networks. Also discussed will be the implementation of wireless Internet over next generation cellular systems and explains technical implications of evolution from fixed Internet access to mobile environment. This tutorial will explain current and future mobile and wireless Internet technologies, as well as up-to-date trends of these two leading technologies into next generation wireless networks such as UMTS, wideband CDMA, and beyond. This tutorial should give it attendees all the knowledge they need to start and/or continue research and development projects and to plan for wired and wireless networking.

T7. The Role of RADIUS/AAA in Managing and Securing Wireless LANS

Kevin Walsh, Funk Software, USA

Because of the new business and revenue opportunities it provides, wireless operators are offering more options for data communications. One important component of securing wireless data communications over 2G, 2.5G and migrating toward 3G and 3GPP2 architectures is "AAA," or Authentication, Authorization, and Accounting. AAA handles not only the critical task of authenticating wireless node users onto the network, but also plays a key role in a wireless operator's ability to offer differentiated products and to move from flat fee models to a service-usage basis.

T2. Space-Time Coding for Broadband Wireless Communications

Dr. Georgios B. Giannakis, University of Minnesota, USA

For point-to-point flat-faded links, space-time (ST) coding across multiple-antenna transmissions has emerged recently as a ``capacity-booster'' offering not only coding but also diversity gains when combined with appropriate signal processing at the receiver. ST coded transmissions may encounter propagation impairments including frequency-selectivity (arising due to multipath propagation of high-rate wideband systems), time-selectivity (arising due to carrier offsets and mobility-induced Doppler), multiuser, co-channel, and intentional interference. This tutorial starts with background on information theoretic and coding aspects for point-to-point links over flat-fading quasi-static channels. Coherent, differential and non-coherent schemes are covered along with multichannel estimation and ST coding for flat, time-selective, frequency-selective, and multiuser channels. Specific schemes include trellis, block, constellation rotation, and layered ST codes.

T4. IEEE 802.11 QoS MAC Enhancements

Dr. Mike Tzamaloukas, AmbiCom, Inc., USA

This tutorial presents a taxonomy of medium access control (MAC) protocols that provide quality of service (QoS) guarantees in wireless, ad-hoc networks. In the 2.4GHz ISM band, higher yet affordable data rates and an explosion of applications for the mobile user demand novel MAC solutions. Even though relevant research work has been published since the early 90ıs, it was not until 1999 that the IEEE 802.11 standard committee issued a call for papers, and task group e was formed to investigate possible solutions that support best-effort as well as delay-bounded traffic over wireless links. The journey to a highly anticipated standard and the lessons learned is the focus of this presentation. Topics include:

T6. Evolution of Core Networks from GSM to UMTS

Dr. Vijay K. Varma, and Dr. K. Daniel Wong, Telcordia Technologies, USA

This tutorial discusses the evolution of core network from GSM to UMTS, with particular emphasis on packet domain and the IP Multimedia (IM) Core Network (CN) subsystem. Starting with a brief overview of GPRS, the evolution of the core network to "All-IP" and the resulting network architectures are examined. The IM CN subsystem concepts and procedures are discussed in detail and the role of Internet Telephony protocols for multi-media session set up are addressed. The tutorial briefly covers the UMTS service environment, including Virtual Home Environment and Open Service Access. Topics include:

T8. Security Issues in Mobile Radio Networks

Dr. Tasneem G. Brutch, Hewlett-Packard, USA

A number of wireless protocols are currently in use, each with its advantages and drawbacks. The protocols discussed will include GSM, CDPD, and Digital PCS. An overview will be provided for each of them followed by the security functions and services, and the deficiencies in the security features of each of the protocols. In addition, an introduction will be given of the Universal Mobile Telecommunication System (UMTS), which is a part of the International Telecommunications Union's vision of a global family of third generation (3G) mobile communication systems. The security features provided in the 3G wireless standards will be presented. The tutorial will conclude with some examples of successful system deployments.

T9. Broadband Wireless Ad-hoc Networks-Emergence of LAN-PAN-HAN Industry (Full Day Session)

Dr. Kaveh Pahlavan, Worcester Polytechnic Institute, USA

The broadband ad-hoc indoor network industry started with the introduction of wireless local area networks (W-LAN) in the early 1980's in response to the increasing number of computer terminals in the offices and manufacturing floors and the need to interconnect these terminals. In recent years an increasing number of terminals in the home environment has created a new wave of interest in broadband indoor networks for in-home applications that are referred to as wireless home area networks (W-HAN). In addition, wireless personal area networks (W-PAN) have added a new dimension to wideband local access, which has opened a window of opportunity for a number of innovative applications to emerge. This tutorial provides an understanding of the evolution of the wireless LAN-HAN-PAN market and technologies from the early days of its infancy up to its current sudden growth. The tutorial starts with wireless LANs from the point of view of the computer communication industry, military, and telecommunication service providers. Then it explains the existing wireless LAN standards and products and details of the IEEE 802.11 technologies. Lastly, the tutorial moves to current trends in HIPERLAN-2 and IEEE 802.15 WPAN for Bluetooth and HomeRF. This discussion will also address evolving location aware services and indoor geolocation as well as interference and coverage in unlicensed bands. The textbook associated with this tutorial is the Principles of Wireless Networks - A Unified Approach, K. Pahlavan and P. Krishnamurthy, Prentice Hall, 2002.

T10. The Wireless Application Protocol for the Mobile Internet

Professor Zygmunt J. Haas, Cornell University, USA

This tutorial is about ubiquitous access to what is perceived as one of the most impressive inventions of the 20th century - the Internet. Although electronic access is no longer in the hands of highly skilled professionals only, it is still far from being truly universal. The challenge that this field is driven by is the fact that, although the volume of accessible information is growing at an unprecedented rate, the capabilities of the wireless and mobile hardware are lagging behind. Thus, mobile systems are expected to continue to be transmission-capacity and battery-power limited. As such, the techniques for accessing the information and the communication protocols that are used for wired access cannot be efficiently used in such an environment and new approaches are needed. This is where the Wireless Access Protocol (WAP), the subject of the course, comes into play. The goal of WAP is to create an efficient and effective protocol suite for supporting web access on mobile devices.

Confronting the current Internet access model with the mobile Internet access requirements, the components and architecture of WAP will be presented. We will start by introducing the Wireless Application Environment and the basics of the Wireless Markup Language (WML). Then, we will discuss in details the various layers of the WAP protocol suite, starting from the Wireless Session Protocol, through the Wireless Transaction Protocol and Wireless Transport Layer Security down to the Wireless Datagram Protocol.

From September 1994 until July 1995, Dr. Haas worked for the AT&T Wireless Center of Excellence, where he investigated various aspects of wireless and mobile networking, concentrating on TCP/IP networks. In August 1995 he joined the faculty of the School of Electrical and Computer Engineering at Cornell University. Dr. Haas holds fourteen patents in the fields of high-speed networking, wireless networks, and optical switching. He has been a guest editor of three IEEE JSAC issues ("Gigabit Networks," "Mobile Computing Networks," and "Ad-Hoc Networks"). Dr. Haas is a Senior Member of IEEE, and a Chair of the IEEE Technical Committee on Personal Communications. His interests include mobile and wireless communication and networks, personal communication service, and high-speed communication and protocols.

T12. WCDMA for UMTS

Dr. Harri Holma, Nokia, USA

This tutorial covers the main parts of the WCDMA FDD/3GPP layer 1 standard, its performance, provisioning of QoS with radio resource management and integration with GSM/EDGE. The main focus of the tutorial is on the physical layer standard together with High Speed Downlink Packet Access, HSDPA. The coverage and capacity of the WCDMA air interface is presented with simulation and measurement results. The radio resource management algorithms are covered in this tutorial with an emphasis on the efficient support of mixture of new services with different QoS requirements. The integration of GSM/EDGE and WCDMA is covered from the radio resource management and from the radio access network point of view. Topics include:

T14. Smart Antennas for Wireless Systems

Dr. Jack H. Winters, AT&T Labs-Research, USA

In this tutorial we will discuss current and future antenna technology for wireless systems and the improvement that smart and adaptive antenna arrays can provide. We will describe standard cellular antennas, smart antennas using fixed beams, and adaptive antennas for base stations and wireless local area network (WLAN) access points, as well as antenna technologies for handsets. We will show the potential improvement that these antennas can provide, including range extension, multipath diversity, interference suppression, and capacity increase. The issues involved in incorporating these antennas into wireless systems in different environments, such as rural, suburban, and urban areas, as well as indoors, will be described in detail. The use of these antennas in the second generation CDMA and TDMA (GSM and ANSI-136), along with their potential in third generation systems (WCDMA and EDGE) will then be described. This includes discussing how smart antennas can be used in cellular and WLAN bases to improve performance and, in combination with four antennas on the terminal, to provide a four-fold data rate increase. Theoretical, computer simulation, experimental, and field trial results will be presented. Topics include:

T16. Antennas for Wireless Communications

Dr. Steven R. Best, Cushcraft Corporation, USA

This tutorial/workshop provides a fundamental and broad introduction to antenna properties, antenna design considerations and RF propagation issues. The workshop begins with the basic concepts and definitions used in the antenna industry. Antenna characteristics such as VSWR, radiation pattern, polarization, axial ratio, directivity, gain, EIRP, etc. are defined and their impact on wireless system performance is discussed. Additionally, a detailed overview of different antenna types including wire antennas, portable device antennas, microstrip, electrically small antennas, fractal antennas, circularly polarized and aperture antennas is presented. The basic concepts associated with the design and performance of antenna arrays are also discussed. RF propagation issues such as path loss, multipath fading, polarization distortion, noise and interference, and diversity implementation are described and their impact on system performance is illustrated. An overview of the different types of antennas used in today's wireless communications systems is also presented.

T11. Mobile VPN Technologies in 2.5G & 3G Enviornment

Alex Shneyderman, Lucent Technologies, USA

The convergence of wireless and data technologies has made Mobile VPN an important vehicle for communicating information via public infrastructures. MVPNs have the potential to enable unprecedented array of wireless services with all the quality of secure wired network enabling carriers to collect premium pay revenues. To realize this potential, operators must design and implement wireless infrastructures capable of supporting MVPN services.

T13. CDMA2000 1X & 1X EV

Y. Ch. Jou, Qualcomm Incorporated, USA

This tutorial is for the experienced telecommunications professional with a need to learn in depth functioning of Code Division Multiple Access (CDMA) system that conforms to the cdma2000 family of specifications. Good familiarity with cdmaOne is required, as much of the material will compare and contrast cdma2000 with cdmaOne. This tutorial begins with an overview of the concepts and terminology related to CDMA technology. The overview is followed by a detailed explanation of the "how" and "why" of cdma2000 wireless communications. It provides the audience an in-depth description of the functioning of a cdma2000 system according to the key CDMA standards (TIA/EIA/IS-2000-A) and the rationale behind the specifications. Tutorial discussions provide a point-by-point description of key processes including the physical layer modulation and coding, unwanted emissions, handoff and power control. Emphasis is placed on new features and capabilities introduced in cdma2000. The tutorial also covers a presentation of both simulation and field data performance results.