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The Third Annual ACM/IEEE International Conference on Mobile Computing and Networking (MobiCom'97)

September 26-30, 1997
The Main Building of the Hungarian Academy of Sciences
Budapest, Hungary


MobiCom'97 Tutorials


Friday, September 26:


Saturday, September 27:



TUTORIAL 1

Wireless ATM: Standards, Architectures, Protocols & Implementation

Dr. Lou Dellaverson (Motorola, USA), Dr. C.-K. Toh (Hughes Research Laboratories, USA), and Dr. Arup Acharya (NEC, USA)

Friday, September 26
8:30am - 5:00pm


ATM is currently viewed as the next high speed integrated network paradigm, supporting different classes of traffic and providing quality of service. Mobile communications have evolved and created a significant impact on the way we work and communicate. The convergence of mobile communications, computing, and ATM gives rise to Wireles ATM networks. While ATM helps to bring multimedia to the desktop, Wireless ATM provides similar services to mobile computers and devices. In addition, Wireless ATM networks provide seamless integration with ATM-based B-ISDN networks.

This tutorial will cover system-level architectures for mobile/wireless ATM with necessary radio protocols for wireless ATM access and networking protocols to support mobility management. Standardization activity within the ATM Forum's WATM group will be presented along with implementation experience from research prototypes of mobile and wireless ATM. This tutorial will not only benefit researchers, professors, students, but also consultants, network engineers and managers who wish to acquire the knowledge and practical know-how on Wireless ATM.

Biographical Sketches:

Arup Acharya is a Research Staff Member with the Systems Architecture Group, C&C Research Labs, NEC USA, Princeton, and is working on mobile ATM protocols and fast IP switching over ATM. He has actively contributed to the ATM Forum's WATM working group since its inception. He received his B.Tech. (Hons.) degree in Computer Science and Engineering from IIT, Kharagpur in 1987, and M.S. and Ph.D. degrees in Computer Science from Rutgers University in 1990 and 1995, respectively.

C.-K. Toh is with Hughes Research Labs and is responsible for R&D efforts on ad hoc networking and Wireless ATM. He is Area Editor on wireless networks for the IEEE on-line journal Communications Surveys and Feature Editor for ACM Mobile Computing and Communications Review, and is the author of the book Wireless ATM and Ad Hoc Networks: Protocols and Architectures which was published by Kluwer Academic Press (1997). He received his Diploma (Electronics and Communications) with a Certificate of Merit award from the Singapore Polytechnic in 1986, his B.Eng. (Electronics) degree with first class honours from University of Manchester in 1991, and his Ph.D. degree from University of Cambridge, England, in 1996.

Lou Dellaverson is Chairman of the Wireless ATM Group of the ATM Forum and Manager of Wireless ATM Lab at Motorola Radio Research Lab.


TUTORIAL 2

Mobile IP: Adding Mobility to the Internet

Charles E. Perkins (Sun Microsystems, USA)

Friday, September 26
8:30am - 5:00pm


The Internet is growing by leaps and bounds, and likewise mobile computers are becoming more and more popular. When mobile computers move and attach themselves to new networks within the Internet, they can use Mobile IP as a means to achieve seamless roaming transparently to application software. In this situation, transparent means that the applications work just as before and don't need to be recompiled or reconfigured. Seamless means that roaming from one place to another occurs without inconvenience to the user. As long as a physical communication path exists, the user might not even be aware when movement has happened. The objective of this tutorial is to lay out all the necessary protocol technology to allow mobile computers to use Mobile IP, and to describe the relevant operation of other protocols which can be used to aid mobility, such as DHCP and Service Location Protocol.

Topics that will be covered include Agent Advertisements, registration procedures, tunneling mechanisms, the role of security, and home agents and foreign agents. We will also cover how to set up a home network, getting care-of addresses via DHCP, Route Optimization, smooth handoffs, IPv6 mobility support, and the Service Location Protocol. In addition, we will look at an architectural model for supporting nomadic users under development within the Cross-Industry Working Team (XIWT) in the "Nomadicity" group.

Biographical Sketch:

Charles E. Perkins has recently joined Sun Microsystems and was previously a research staff member at IBM T.J. Watson Research Center. He is an editor for ACM/IEEE Transactions on Networking and ACM/Baltzer Mobile Networks and Applications, and has recently authored a book on Mobile IP. He is also associate editor for the ACM SIGMOBILE magazine Mobile Communications and Computing Review and is serving on the Internet Architecture Board (IAB). Charles holds a B.A. in mathematics and a M.E.E. degree from Rice University, and a M.A. in mathematics from Columbia University.


TUTORIAL 3

Simulation of Large Mobile Wireless Networks

Prof. Rajive Bagrodia and Prof. Mario Gerla (University of California at Los Angeles, USA)

Saturday, September 27
8:30am - 5:00pm


Protocols for wireless networks are complex to design, evaluate and implement. Their performance depends on a combination of factors that include multimedia traffic patterns, mobility models, application objectives, processor characteristics, and radio characteristics. Evaluation of a protocol as a function of these diverse parameters is analytically intractable. Given the complexity of the radio environment, sequential simulation of networks with thousands of nodes requires several days, and perhaps, even weeks. To make the design more interactive, it is imperative to reduce the turnaround time for the models. The goal of this tutorial is to describe efficient simulation techniques for very large mobile wireless networks and to present some representative case studies. The environment has been built using the Maisie simulation language at UCLA.

A number of approaches to reducing the simulation time for such models will be presented including parallel simulation, hierarchical modeling, and multi-paradigm models. The tutorial will begin with an overview of existing simulators, including OPNET, Bones, and other commercial products. The primary emphasis of the tutorial is on presenting the use of Maisie for parallel simulation of network models and their subsequent porting into physical implementation. The sources of overhead in the parallel execution of network models will be discussed together with methods to reduce their impact. Common pitfalls encountered in the design of parallel simulation models will be discussed. We will also describe techniques to port simulation models to protocol implementations. Finally, a number of case studies will be presented to highlight the lessons that have been learned in the design, simulation, and implementation of wireless network protocols.

Biographical Sketches:

Rajive Bagrodia is an Associate Professor of Computer Science in the School of Engineering and Applied Science at UCLA. He is an associate editor of ACM Transactions on Modeling and Computer Systems (TOMACS) and served as the Program Chair and General Chair, respectively, for the 1993 and 1994 Workshop on Parallel and Distributed Simulation. Professor Bagrodia was selected as a 1991 Presidential Young Investigator by NSF and received the 1992 TRW Outstanding Young Teacher award from the School of Engineering and Applied Science at UCLA and the 1991 Excellence in Teaching award from the Computer Science Department there. He obtained a Bachelor of Technology in Electrical Engineering from the Indian Institute of Technology, Bombay, in 1981, and the M.A. and Ph.D. degrees in Computer Science from the University of Texas at Austin, in 1983 and 1987, respectively.

Mario Gerla is a Professor of Computer Science at UCLA. His current research projects cover the areas of topology design and bandwidth allocation in ATM networks; design and implementation of optical interconnects for supercomputer applications; design and performance evaluation of air/ground wireless communications for the Aeronautical Telecommunications Network; and network protocol design and implementation for a mobile, integrated services wireless radio network. He received his graduate degree in Electrical Engineering from Politecnico di Milano, Italy in 1966 and his M.S. and Ph.D. degrees in Computer Science from the University of California, Los Angeles, in 1970 and 1973, respectively.


TUTORIAL 4

Cellular Wireless Networks: Principles and Operation

Prof. Zygmunt J. Haas (Cornell University, USA)

Saturday, September 27
8:30am - 12:00pm


This tutorial addresses the basic networking concepts of mobile cellular and wireless networks, exposing both the theoretical and practical aspects of mobile communication. As an introduction, basic enabling technology will be presented, such as the cellular principle and multiple access technologies (e.g., CDMA). Following this introduction to mobile radio, we will investigate the underlying techniques used in design and operation of cellular networks, including handoff schemes, channel assignment and power control algorithms, common-air protocols (e.g., IS-54/136, IS-95, GSM, etc.), and microcellular architectures. Some more advanced concepts, such as macrodiversity and multi-tier wireless networks, will be briefly discussed. Next, we will address the subject of user mobility support in the wireless environment. In particular, call processing functions, which include roaming, routing, and registration, will be explained. The differences between mobility management in data networks and in voice networks will be clarified. As an example, a comparison of the Cellular Digital Packet Data (CDPD) and Internet mobility support through Mobile IP will be presented. The tutorial will be augmented with abundance of examples from existing and proposed future wireless networks. The tutorial is targeted towards broad audience, both from the academic and the industrial environments.

Biographical Sketch:

Zygmunt Haas is an Associate Professor in the School of Electrical Engineering at Cornell University and was previously with AT&T Bell Laboratories as a Member of Technical Staff. He has organized several Workshops, delivered tutorials at major IEEE conferences, and serves as editor of several journals. He was a guest editor of two IEEE Journal on Selected Areas in Communications issues ("Gigabit Networks" and "Mobile Computing Networks"). He received his B.Sc. in Electrical Engineering in 1979 and M.Sc. in Electrical Engineering in 1985. In 1988, he earned his Ph.D. from Stanford University.


TUTORIAL 5

Disconnected and Weakly Connected Access to the World Wide Web: Issues and Techniques

Dr. Murray S. Mazer (Open Group Research Institute, USA)

Saturday, September 27
1:30pm - 5:00pm


This tutorial addresses the concepts, issues, and techniques involved in supporting weakly connected and disconnected access to Web-based information resources. ``Access'' includes both reading and writing - in addition to continuing to browse under diminished bandwidth conditions, the user may wish to create or change content, having it integrated back into the Web when the connectivity is sufficient. As background, we will review techniques used for disconnected and weakly connected access to network-based file systems. We will compare and contrast file systems and the World Wide Web, pointing out numerous ways in which the two types of information systems differ (and how those differences affect the adaptation of techniques from the file system space to the Web space). The tutorial will include a review of systems for "off-line browsing" (a.k.a. disconnected reading) and for filtering requests and responses to adapt to changing bandwidth conditions. We will address issues, techniques, and limitations regarding architectural choices, meta-data requirements, data management, "weblet" management, consistency, pre-fetching policies, change staging and integration, content transformation, security, user expectations, and other relevant topics. We will also discuss the impact of HTTP1.1 and other topical standards.

Biographical Sketch:

Murray S. Mazer is Principal Research Fellow at The Open Group Research Institute (Cambridge, MA, USA), where he leads a project on ongoing, adaptive access to Web-based resources under variable or intermittent connectivity. He previously worked at Digital Equipment Corporation, on distributed systems and mobile computing (including disconnected access to network-based file systems), and is a Technical Editor for IEEE Personal Communications. Dr. Mazer received the Ph.D. in Computer Science from the University of Toronto.


 


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David B. Johnson <dbj @ cs.cmu.edu>. Last modified July 20, 1997.