Home > Conference Program > Tutorials   List of tutorial presentations at ICC2005 TU01 - Wireless Broadband Communications Monday 16 May 2005 - Full day Monday 16 May 2005, 09:00 - 17:00 Presenter Prof. K. C. Chen, Taiwan University Abstract This tutorial aims at an overview of 3 wireless broadband networking scenarios for universal access for Internet devices: wireless personal area networks, wireless local area networks, and wireless metropolitan area networks. Instead of treating separately, this tutorial develops based on common OFDM and Internet access as a common platform of technologies. For near future devices ranging from computers and PDAs, networking devices, handsets, consumer devices etc, all these technologies are required into a multi-mode wireless communication system architecture (maybe considered as a sort of programmable/flexible system architecture). In addition to in-depth overview these 3 technologies, we shall look from the technology common side in this tutorials to aim at universal connections of Internet appliances. This may serve as the foundation of wireless communications for consumer communications and networks, which is a major direction in communication technology according to IEEE ComSoc   TU02 - Achieving QoS, Security and Mobility in IEEE 802.11 WLANs and Future Directions Monday 16 May 2005 - Full day Monday 16 May 2005, 09:00 - 17:00 Presenter Prof. Sunghyun Choi, Seoul National University Dr. Anand R. Prasad, DoCoMo Communications Labratories Europe GmbH Abstract Today, we are witnessing that IEEE 802.11 (or Wi-Fi)-based Wireless LANs (WLANs) are being widely accepted for many different applications. This wireless technology was originally developed as a replacement of Ethernet by providing up to 2 Mbps transmission rates. The state-of-the-art 802.11 now supports up to 54 Mbps rates at much lower cost, and its speed is still growing today via on-going standardization efforts. With growing popularity, there has been a strong desire to enhance this wireless Ethernet technology in many aspects including QoS, security, and mobility supports. Accordingly, during the last few years, there have been lots of efforts made across industry and standard groups. There also have been heavy research efforts in academia for better understanding of the protocol and network performance. This tutorial will cover most of the recent updates in the 802.11 technology covering QoS, mobility, and MAC/PHY interactions while touching the technical details as closely as possible.   TU03 - Architecture for End-user Services in Next Generation Networks Monday 16 May 2005 - Half day Morning Monday 16 May 2005, 09:00 ~ 12:15 Presenter Dr. Roch H. Glitho, Ericsson Canada and Concordia University Abstract “Next generation networks” is loosely used in the literature to refer to the networks that will replace the current telecommunication infrastructure. The successful deployment of these new networks is highly dependant on the range of services they will offer to end-users. End-user services are indeed the reason for being of next generation networks. Several architectures have been proposed over the years to engineer them. The results are mixed and there are still many research challenges. This tutorial presents an overview of the architectures proposed so far for end-user services in next generation networks, and discusses the research challenges. The overview is illustrated by concrete case studies. The tutorial starts by the basics of end-user services, service architectures and next generation networks. Signaling (e.g. SIP, H.323, Megaco/H.248), media handling (e.g. RTP, RTCP), QoS (e.g. DiffServ, IntServ) and telcos specific network architectures (e.g. 3GPP, 3GPP2) are discussed. We then provide a comprehensive and critical overview of the signaling protocol neutral architectures (e.g. Parlay), the signaling protocol specific architectures (e.g. SIP servlet) and the emerging architectures (e.g. Web services) for end-user services in next generation networks. The case studies used for illustration purpose include Run-For-Your Life, a game developed with Parlay in our lab, and also Cops & Robbers, another game developed with Web services. The last part of the tutorial is devoted to the research challenges. It focuses on the service architectures for beyond 3G. The I-centric service architecture of the World Wireless research Forum (WWRF) and the associated research issues are discussed. We also identify the research issues inherent to service architectures for some beyond 3G networks such as (mobile) ad hoc networks.   TU04 - Infrastructure-Based Multihop, Relay and Mesh Wireless Networks Monday 16 May 2005 - Half day Morning Monday 16 May 2005, 09:00 - 12:15 Presenter Prof. Halim Yanikomeroglu, Carleton University 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, radio resource management, coverage, capacity, and throughput) and networking issues (including intelligent routing, load balancing, and handoff).   TU05 - Ultra-Wideband Communications: From Concept to Reality Monday 16 May 2005 - Half day Morning Monday 16 May 2005, 09:00 - 12:15 Presenter Prof. G. Giannakis, University of Minnesota Prof. L. Yang, University of Florida Abstract In February 2002, a law-and-order of the Federal Communication Commission (FCC) gave the “green light” (spectral mask in the range 3.1-10.6 GHz) for commercial applications of Ultra Wideband (UWB) systems. Since this recent FCC release, UWB has emerged as an exciting technology whose “time has come” for wireless communications, and local area networking. Conveying information over Impulse-like Radio (IR) waveforms, UWB technology comes with unique features: low-power carrier-free transmissions, ample multipath diversity, low-complexity baseband transceivers, and a potential for increase in capacity. Thanks to its ultra-short pulses, UWB also allows for very accurate delay estimates providing position and localization capabilities within a few centimeters. The scarcity of bandwidth resources coupled with the capability of IR to overlay existing systems, welcomes UWB connectivity in the workplaces, and at home for indoor an especially short range wireless links. However, to realize these attractive features, UWB research and development has to cope with formidable challenges that include: high sensitivity to timing the reception of ultra-short pulses, mitigation of fading propagation effects with pronounced frequency-selectivity, low-complexity constraints in decoding high-performance multiple access protocols, and strict power limitations imposed by the desire to minimize interference between UWB communicators, and co-existing RF systems. This tutorial will provide the fundamentals of UWB communication systems, driving applications, recent developments, and open problems. Emphasis will be placed at physical layer issues, but implementation aspects as well as cross-layer, and networking topics will be covered.   TU06 - Coding for Multiple Antennas Monday 16 May 2005 - Half day Afternoon Monday 16 May 2005, 13:45 - 17:00 Presenter Prof. Tolga Duman, Arizona State University Prof. Ali Ghrayeb, Concordia University 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.   TU07 - Wireless Ad-hoc Networks Monday 16 May 2005 - Half day Afternoon Monday 16 May 2005, 13:45 - 17:00 Presenter Prof. Carla-Fabiana Chiasserini, Politecnico di Torino Abstract An ad hoc network is composed of a set of wireless nodes that can spontaneously form a network without the need for a fixed infrastructure or a centralized controller. Various ad hoc network solutions have been devised, from local area networks (WLANs), to personal area networks (WPANs). Common features to all ad hoc systems are the use of a shared medium for data transfer and of multi-hop communications to reach a far-off destination. These characteristics pose challenging issues, especially related to traffic routing and access control. The tutorial will first give an overview of ad hoc networks and of the main aspects concerning such communication systems. Then, some of the emerging ad hoc networking technologies will be presented. In WLANs, some of the major issues in medium access control and its interaction with higher layers will be described in the context of the IEEE 802.11 technology. In the context of MANETs, particular attention will be given to traffic routing, and the most relevant solutions will be outlined. Also, the issue of cooperation among network nodes in MANETs, and its importance to packet forwarding, will be addressed. Finally, some theoretical results concerning the capacity of ad hoc networks, in presence of stationary as well as mobile nodes, will be presented. The tutorial will conclude with the presentation of some open issues in ad hoc networks.   TU08 - Technology and Practice of Operational Situation Management in Dynamic Networks Monday 16 May 2005 - Half day Afternoon Monday 16 May 2005, 13:45 - 17:00 Presenter Dr. Gabriel Jakobson, Altusys Corp. Abstract The anomaly detection and operational situation management in dynamic networks is one of the prerequisites of implementing system recovery and adaptation mechanisms in response to the system internal faults, external hostile attacks, and exceeding the system’s capacity limits. In recent years several important types of dynamic systems have been introduced, including mobile ad hoc networks, wireless sensor networks; mobile emergency, rescue, and disaster relief networks; and defense battlefield networks. There are several new factors associated with the modeling and management of those networks, including high mobility of the nodes, large-scale distribution of the system, unpredictable changes in the system topology, and re-assignment of the functional role and authority of the nodes. This tutorial gives an overview of the methods used for describing the operational situations happening in dynamic networks and algorithms for discovering anomalies in the behavior of dynamic networks. Central to the discussed methods is the real-time distributed event correlation. Event correlation is a widely accepted technology for managing the complexity of modern telecommunication and data networks. It has been used for various network management tasks, but the majority of its applications have been so far for network fault management. The tutorial introduces various approaches to event correlation exist, including rule-, case and model-based reasoning, finite state machines, and binary coding methods. Significant part of the tutorial is devoted to the architectural issues of building distributed event correlation systems, review of existing event correlation products, and practical examples of using the event correlation methods for managing the dynamic networks.   TU09 - CDMA2000-1xEV-DV and EV-DO Friday 20 May 2005 - Full day Friday 20 May 2005, 09:00 - 17:00 Presenter Dr. Young Yoon, Ericsson Wireless Communication Abstract This tutorial covers the following systems concepts of 1xEV-DO and 1xEV-DV systems with a primary focus on the recently approved 1xEV-DO Revision A( IS-856-A) and IS-2000 Revision D by 3GPP2 and TIA. It will discuss extensively the support for high speed packet data in both forward and reverse link. The details of how 1xED-Dx exploits channel variation, channel quality feedback and link adaptation to significantly increase the spectral efficiency will be given. It will also discuss the design of enhanced reverse link high-speed packet data service, MAC operation, rate control and power control.   TU10 - IIntegrated Wireless Systems Friday 20 May 2005 - Full day (Cancelled) Friday 20 May 2005, 09:00 - 17:00 Presenter Dr. Roberto Rivoir, Atmel Corp Abstract This Tutorial will provide a survey on the impressive levels of integration, reached nowadays in the design of Systems-On-Silicon for wireless applications. This is made possible by two factors, which represent two real boosters of the wireless revolution: I) the continuous progress of CMOS technology, tending to increase year-over-year the levels of integration thus cutting the costs, and ii) the level of sophistication reached by CAD design and verification tools for AMS (Analog and Mixed-Signal) design. The tutorial, following a top-down approach, provides both a system and circuit perspective, where starting from examples of integrated wireless systems, like a next-generation cell-phone with advanced functionality, or an mobile miniaturized device for wireless networks of sensors, the system is further partitioned into a chip-set, then the different architectures analyzed (transceivers, modems, codecs, power-management), and finally the main building blocks (data converters, LNA, mixers, filters,..) described. The material is logically divided in three sections: the market of integrated wireless systems, where examples are presented for some relevant applications, like cell-phones, RFID’s, smart wireless communicative components for sensor, positioning, identification networks, and a quick survey on the most involved wireless standards is given; architectures, where different RX (superheterodyne, direct conversion, low IF, wideband IF, software radio), and TX architectures (I/Q or polar modulation, PA linearization), are explained; finally macrocells and building block circuit implementations in CMOS, where also several real-life drawbacks and trade-offs will be mentioned. The Attendee of this tutorial, who is not necessarily familiar with wireless Systems-On-Chip, will gain a good understanding on the state-of-the-art, and current possibilities offered by system integration, but also limitations   TU11 - Next Generation Networks and Internet Friday 20 May 2005 - Full day Friday 20 May 2005, 09:00 - 17:00 Presenter Prof. Abbas Jamalipour, University of Sydney Abstract Next generation mobile network will consist of several advanced technologies that have been standardized in the past few years including the second and third generation wireless cellular, wireless LAN, wireless MAN, and short-range connectivity. In this context, there is a great requirement to understand similarities and differences among architectures of those technologies, and design appropriate inter-networking architecture that interconnects those technologies. While a predominant application for the next generation networks will be the Internet and its access over mobile infrastructure, the new system should also provide service for traditional voice and other real-time applications and eventually more advanced broadband multimedia services. This will in turn require more research on architectures and protocols that interconnect those heterogeneous networks efficiently and in a seamless form. In this tutorial, the state-of-the art technologies for the wireless IP including UMTS, cdma2000, wireless LAN as defined in IEEE 802.11 (Wi-Fi), and wireless MAN IEEE 802.16 (WiMAX) will be explored. The change in protocol design required for a complete migration from the traditional wired network into a heterogeneous wired/wireless will be explained and the architectural concepts to support a broadband wireless IP in heterogeneous environment for the next generation network will be discussed. Technical comparison among different technologies to compete with each other in the next generation networks will be also provided.   TU12 - A Primer on Service Quality Management Friday 20 May 2005 - Half day Morning(Cancelled) Friday 20 May 2005, 09:00 - 12:15 Presenter Dr. Vilho Raisanen, Nokia Networks Abstract The tutorial describes requirements and characteristics of different packet based services. This part of the tutorial allows the participants to understand characteristics of services such as data downloading, browsing, streaming and multimedia over IP (MMoIP). The next major part of the presentation deals with means of specifying and assessing service quality. The two first parts are extended versions of the material within "Implementing service quality in IP networks" book. The third major part gives an overview of service quality support mechanisms in wired and wireless environments. Service quality support architectures and their building blocks from standards (IEEE, IETF, GSMA, 3GPP, 3GPP2) are presented next. The fourth part describes how IP based services may be modelled and managed, and describes how linking between service management and network management is achieved in mobile systems as a use case. The last part builds on relevant work in different standards bodies.   TU13 - Radio Resource Management in Multicarrier and Multihop Wireless Network Friday 20 May 2005 - Half day Morning Friday 20 May 2005, 09:00 - 12:15 Presenter Prof. Seong-Lyun Kim, Yonsei University Prof. Jeonghoon Mo, Information and Communications University (ICU) Abstract Radio resource management (RRM) refers to system techniques to increase efficiency of radio frequency spectrum (bits/hz) by controlling wireless interferences effectively. Recently there have been three trends in RRM research, which can be summarized as follows: First, people start to utilize user mobility to enhance the capacity of wireless networks, where the mobility was something problematic to be mitigated in traditional wireless networks. Even virtual implementation of mobile movement is considered to increase spectral efficiency. One such example can be found in the random beam-forming. Second, energy-efficiency (bits/hz/watt) has become a very important topic, due to multimedia services by battery-powered terminals. Increasing lifetime of mobiles or that of network has become a very active research issue. Third, people have been sought for design of RRM techniques for non-real time data service. On top of those trends, the wireless network itself is also evolving towards multi-dimensional one. By “multi-dimensional,” we mean multi-carrier and multi-hopping. In this lecture, we provide fundamentals and the state-of-the art research results on RRM. Throughout the lecture, our focus is on the following questions: “How those recent techniques could be adopted in the multi-dimensional networks?” and “Why do wireless networks evolve towards the multi-dimensional networks?” with respect to improving energy/spectrum efficiency.   TU14 - MIMO Detection: Theory and Practice Friday 20 May 2005 - Half day Afternoon Friday 20 May 2005, 13:45 - 17:00 Presenter Prof. John Barry, Georgia Tech. Abstract Multiple-input multiple output (MIMO) techniques have been shown to both increase the data rate and increase the robustness to fading in wireless communications, leading to widespread adoption in several outdoor and indoor high-speed wireless data standards. 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; the matched-fitter bound, power control, and the near-far problem; and zero-forcing and minimum-MSE detectors. We will provide several views of the important decision-feedback detector, including the successive-interference cancellation view, the matrix view, the Gram-Schmidt, 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 mutistage detectors and tree-based detectors like the sphere detector and its variations. 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. This tutorial will benefit practicing engineers and researchers who are interested in understanding and doing research in MIMO and related topics, particularly those who are engaged in the design of high-speed wireless data systems. MIMO is currently a very hot topic in both the academic and industrial communities and it is anticipated that this tutorial will be very well attended.   TU15 - Mobility and Security Management in Wireless IP Networks Friday 20 May 2005 - Half day Afternoon Friday 20 May 2005, 13:45 - 17:00 Presenter K. Daniel Wong, Malaysia University of Science and Technology Abstract Wireless networks are becoming increasingly reliant upon IP networks protocols. IP was not originally designed to support mobile nodes. Early applications of IP networks did not require very secure communications. With the rise of wireless communications, and wireless data in particular, additional requirements have been placed on IP to handle mobility. Similarly, with an increasing diversity of usage, additional requirements have been placed on IP networks to provide various security functions. IP has been, and continues to be, retrofitted in various ways to meet these needs, with the development of protocols like Mobile IP, and of security frameworks like IPsec and AAA. In many practical cases, both mobility and security functions are necessary, and combined solutions may be needed. Interesting issues and challenges arise when trying to integrate mobility and security functions. Even in IPv6, where there is better inherent support for mobility and security than in IPv4, there have been recent difficulties making route optimization secure. This tutorial will cover various types of state-of-art mobility management and security management protocols and techniques, for both IPv4 and IPv6. Practical examples will be discussed based on cellular mobile networks and wireless LANs.