Dallas at night
October 25-30, 1998 Dallas, Texas

Conference Program

Saturday, October 24


Sunday, October 25

Tutorial 1: Mobile IP: Adding Mobility to the Internet
Charles E. Perkins - Senior Staff Engineer, Sun Microsystems

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 path exists for communication, the user might not even be aware when a cell boundary has been crossed. The objective of the seminar 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).

In this tutorial, I will explore in detail all aspects of mobile-IP and other standard protocols that further simplify the operation of mobile computers in the Internet, including:

  • Mobile Agent advertisements
  • Registration procedures
  • Tunneling mechanisms
  • The role of Security
  • Home Agents
  • Foreign Agents
  • How to set up a home network
  • Route Optimization
  • Smooth handoffs
  • Firewalls and filtering by border routers
  • IPv6 mobility support
  • Ad-Hoc Networking
  • Tunnel Establishment Protocol
We will also look at an architectural model for supporting nomadic users under development within the Cross-Industry Working Team (XIWT) in the "Nomadicity" group.

The seminar is intended for anyone who is interested in learning about how to use mobile-IP, create a home network for mobile users within their organization, or explore new Internet protocols and mobile computing. This includes programmers, administrators, network managers, and mobile computer users who are already familiar with using the Internet.

Charles E. Perkins is a Senior Staff Engineer at Sun Microsystems, developing Service Location Protocol and investigating dynamic configuration protocols for mobile networking. He is the editor for ACM/IEEE Transactions on Networking and for ACM/Baltzer Wireless Networks in the area of wireless networking. He is serving as document editor for the mobile-IP working group of the Internet Engineering Task Force (IETF), and is author or co-author of standards-track documents in the mobileip, svrloc, dhc (Dynamic Host Configuration) and IPng working groups. Charles is also associate editor for Mobile Communications and Computing Review, the official publication of ACM SIGMOBILE. He is serving on the Internet Architecture Board (IAB). Charles has authored a book on Mobile IP, and has published a number of papers in the areas of mobile networking, ad-hoc networking, route optimization for mobile networking, resource discovery, and automatic configuration for mobile computers. He is lead guest editor of an upcoming issue of the ACM/Baltzer journal Mobile Networks and Applications. Charles has served on various committees for the National Research Council, and is currently the chairperson of the Nomadicity Working Team of the Cross-Industry Working Team (XIWT). His previous projects included developing multiprocessor operating systems using Mach, and adapting Unix to fit on PDAs (personal digital assistants), multiprocessor systems and user interface prototyping systems.

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. He is a member of ISOC, ACM, IEEE, and the IETF.

Tutorial 2: Overview of 3rd Generation of Wireless Networks
Ramki Rajagopalan - AWARD Solutions, Inc.

The next generation of wireless initiatives is popularly known as '3G'. This overview is designed for professionals in wireless arena who are familiar with current generation of wireless technologies, standards and services.

The tutorial begins with an introduction to 3G and a brief discussion on 1st and 2nd generation technologies and their limitations. The discussion of the previous generations leads in to the driving forces behind the need for 3G and the objectives for 3G. The user perspective wherein we discuss the services in 3G follows this. The needs, objectives and services for 3G lay the foundation to discuss the challenges for 3G. The tutorial then focuses on the current status of the 3G initiative and describes the various standardization efforts and various Radio and Network technologies in the running for 3G. We discuss the efforts on IMT-2000, UMTS and cdmaOne-2000 efforts from standardization perspective. We follow the standards discussions with discussion on various radio access technologies such as WCDMA, TD-CDMA, WTDMA, FRAMES and network access concepts such as IMT-2000 family of systems, WIN, INAP, GSM-CAMEL.

Once the technologies and various standards efforts are discussed then we present the shape of 3G wireless network and discuss how satellite and terrestrial, public and private, wired and wireless networks converge to provide seamless global services.

We then conclude the tutorial by discussing the road ahead for 3G and how the 2G networks will fill the gap between now and deployment of 3G networks.

The tutorial creates intense audience participation by including exercises and audience conducted reviews for each module. These activities increase the participants' interest and involvement throughout the tutorial.

The tutorial is intended for students with good knowledge of wireless networks and familiarity with at least one of the 2nd generation technology. This tutorial covers both the technical and application aspects of 3G; hence, it is suitable for a relatively wide audience.

Ramki Rajagopalan received the M.S. degree in Computer Science from UT Dallas and is working towards the Ph.D. degree in computer science with a specialization in mobile and wireless computing issues.

He has more than 11 years of experience in the telecommunication industry, having worked in the architecture, design, development and performance & capacity analysis of call center management solutions, switch control center systems, digital cross connects, wireless base stations and networks. He has extensive experience in providing training services to communications technology companies including wireless networks, access technologies such as CDMA, wireless services and 3rd Generation wireless technologies.

He started AWARD Solutions, an advanced communications training and consulting company with Satyajit Doctor.

Monday, October 26

Tutorial 3: Client/Server Computing in Wireless and Mobile Environments
Sumi Helal - MCC

Several appliances have engendered the new paradigm of mobile computing, in which users carrying portable devices have access to data and shared information services regardless of their physical location or movement behavior. In the meantime, research addressing information and data access in mobile environments has proliferated.

In this tutorial, we will provide a framework and a categorization of the various ways of supporting mobile client-server information access. The tutorial will examine characteristics of mobility that distinguish mobile client-server computing from its traditional counterpart. The tutorial will then provide a comprehensive coverage and analysis of new paradigms and enabler concepts for mobile client-server computing, including the extended client-server model, mobility-aware adaptations, and data management issues in mobile client-server. The tutorial will also cover and compare major research prototypes for mobile information access. This is a full-day tutorial. High quality, copyrighted notes will be provided.

Sumi Helal, Ph.D., is a Senior Member of the Technical Staff at MCC, Austin. He received the B.Sc. and M.Sc. degrees in Computer Science and Automatic Control from Alexandria University, Alexandria, Egypt, and the M.S., and Ph.D. degrees in Computer Sciences from Purdue University, West Lafayette, Indiana. Before joining MCC to lead the Collaboration Management Infrastructure project (CMI), he was an Assistant Professor at the University of Texas at Arlington, and later, a Visiting Professor of Computer Sciences at Purdue University.

His research interests include large-scale systems, fault-tolerance, transaction processing, distributed and parallel database systems, workflow, mobile computing and transactions, heterogeneous processing, and performance modeling. His current research deals with developing scalable data and transaction management protocols for wireless and mobile environments.

Dr. Helal is a member of the Association for Computing Machinery (ACM) and the IEEE and the IEEE Computer Society, serving on the Executive Committee of the IEEE Computer Society Technical Committee on Operating Systems and Application Environments (TCOS).

He presented over 11 conference tutorials on databases, standards, fault-tolerance, client/server topics, and mobile computing. This includes the International Conference on Data Engineering, VLDB, HPDC, the Reliability Symposium, Hawaii International Conference on Systems Sciences, Parallel Processing Symposium, and the Brazilian database Symposium.

Tutorial 4: TCP for Wireless and Mobile Hosts
Nitin H. Vaidya - Texas A&M University

This tutorial deals with the impact of wireless transmission errors and host mobility on the performance of the transport control protocol (TCP). The tutorial begins with a brief overview of wireless technologies available today, and TCP and Mobile IP protocols.

The tutorial is divided into 3 parts. First part deals with impact of wireless transmissions errors on TCP performance, and techniques for improving performance in presence of such errors. This is followed by an overview of the techniques targeted specifically for the satellite environment. Second part of the tutorial deals with impact of mobility, and techniques to improve TCP performance with mobility. The third part briefly deals with multihop wireless networks, with and without host mobility.

The tutorial will provide the attendees with:

  • overview of the state of the art in TCP for wireless/mobile systems, and
  • understanding of the basic principles that guide the design of TCP modifications over for wireless/mobile systems
Intended Audience:
This tutorial is designed to provide an overview of issues related to TCP for wireless/mobile environments. The tutorial should benefit attendees from industry as well as academia, who work in areas related to telecommunication, wireless data, networking, and multimedia.

Nitin Vaidya received the M.S. and Ph.D. degrees from the University of Massachusetts at Amherst in 1991 and 1992, respectively. He also received the M.E. degree from the Indian Institute of Science, Bangalore in 1988 and the B.E (Hons) degree from the Birla Institute of Technology and Science, Pilani in 1986.

Effective September 1998, he will be promoted to Associate Professor (currently Assistant Professor) of Computer Science at the Texas A&M University. His research interests include wireless/mobile communication and computing, and fault-tolerant computing.

Nitin Vaidya is a recipient of a 1995 CAREER award from the National Science Foundation. He serves on the program committee of the 1998 International Workshop on Discrete Algorithms and Methods for Mobile Computing and Communication (DIAL-M). He is currently the editor of the Newsletters for IEEE Technical Committees on Computer Architecture and Fault Tolerant Computing. He guest-edited a special issue of IEEE Computer magazine on fault tolerant computing. He has served on program and organizing committess of several conferences.

Dr. Vaidya is a member of ACM and IEEE Computer Society.

Tutorial 5: Wireless Ad Hoc Networking
David A. Maltz and Josh Broch - Carnegie Mellon University

An ad hoc network is a collection of wireless mobile nodes that dynamically form a temporary network without the need for any pre-existing network infrastructure or centralized administration. Due to the limited transmission range of wireless network interfaces, multiple network "hops" may be needed for one node to exchange data with another across the network. In recent years, a variety of new routing protocols targeted specifically at this environment have been developed.

In this tutorial we will describe the idea of ad hoc networking and scenarios where this technology will make an impact. We explain how the environment of an ad hoc network is very different from the wired environment, and the effect this has on the design and operation of routing protocols for ad hoc networks. We then describe 6 different approaches to ad hoc networking, including all those presently under consideration for standardization by the IETF. We have been involved in extensive simulation and analysis of four of these protocols, and throughout the tutorial we will share the insights we have obtained from our recent studies.

The intended audience for this tutorial is primarily other networking researchers who are interested in the current state of the art in ad hoc routing protocols. The tutorial should be of particular value to researchers and developers working on physical wireless interface devices, link-layer protocols, or mobile applications.

Attendees will leave the tutorial with

  • a basic understanding of the design space of ad hoc routing protocols and the current approaches to the problem, and
  • a good sense of the current capabilities and challenges of ad hoc networks, and
  • knowledge of the demands that ad hoc routing places on the lower layers of the network stack, and the services it can provide to the upper layers.
This tutorial will be taught by Josh Broch and Dave Maltz, the senior Ph.D. students of the Monarch Project at Carnegie Mellon University under David Johnson. Together with Professor Johnson, the speakers designed the Dynamic Source Routing Protocol for multi-hop wireless ad hoc networks, which has been proposed to the IETF Mobile Ad Hoc Network (MANET) Working Group for standardization. Josh and Dave have also designed and implemented a framework for studying wireless ad hoc networks using the ns simulator, and authored the first comparative analysis of several of the ad hoc routing protocols currently under consideration by the IETF.

Josh Broch authored the first implementation of Mobile IP for IPv6 and is a co-author of a leading IETF proposal for multi-hop routing in ad hoc wireless networks. His recent work focuses on the development and analysis of routing protocols for ad hoc networks. Josh received a B.S. in Mathematics and Computer Science from Barry University in 1995 and a M.S. in Information Networking from Carnegie Mellon University in 1996. He worked for five years as a Systems Engineer at Connections for Business (Hollywood, FL) and has interned at Oak Ridge National Lab and Microsoft.

David A. Maltz has been designing and evaluating protocols for ad hoc networks for the past four years. His other recent research work includes the innovation of a technique called TCP Splice to improve network proxies. As an active participant in the IETF, he is working to create and standardize protocols for both Mobile IP and ad hoc networks. He received the S.B. and S.M. in Electrical Engineering and Computer Science from the Massachusetts Institute of Technology in 1994. He has interned at the Xerox Palo Alto Research Center, Lotus Development Corporation, and the IBM T.J. Watson Research Center. He has held fellowships from IBM and Intel Corporation.

Welcome Reception

Tuesday, October 27

Opening Session
Opening Remarks and Introduction of Dignitaries
Introduction of the Conference
ACW Awards

Keynote address
Charles Drayton (Nortel Networks)

As vice president, Network Marketing and Business Development, Charles Drayton draws on more than 15 years of experience in the telecommunications industry to direct Wireless Networks' global marketing and business development activities. He is also a director of Netas, the Nortel Networks subsidiary in Turkey.

Mr. Drayton possesses a strong customer orientation and a keen understanding of international telecommunications issues, having worked extensively with Nortel customers in many parts of the world.

His previous assignment was vice president, Marketing, Sales and Business Development, for Wireless Networks. Prior to that role, he spent four years in Germany serving as managing director of Nortel Dasa, a joint venture with Daimler-Benz Aerospace established in 1995. He was also vice president, Nortel Europe, responsible for the Magellan data networking product line.

Mr. Drayton joined Nortel in 1983. He has served in a variety of senior management positions encompassing finance, marketing and product line management. Prior to joining Nortel, he worked with the Ford Motor Company for over six years.

He holds a bachelor's degree in economics and a master's degree in business administration from the University of Western Ontario, London, Canada.

Conference Luncheon with Speaker
Bob Brodersen (UC-Berkley)

Paper Session 1: Scheduling for Wireless Networks
Adapting Packet Fair Queuing Algorithms to Wireless Networks

P. Ramanathan and P. Agrawal

A Wireless Fair Service Algorithm for Packet Cellular Networks
S. Lu, T. Nandagopal, and V. Bharghavan

Balanced Media Access Methods for Wireless Networks
T. Ozugur, M. Naghshineh, P. Kermani, C. M. Olsen, B. Rezvani, and J. A. Copeland

Paper Session 2: Information Delivery
Joint Broadcast Scheduling and User's Cache Management for Efficient Information Delivery

C. J. Su and L. Tassiulas

Scheduling On-Demand Broadcasts for Heterogeneous Workloads: New Metrics and Algorithms
S. Acharya and S. Muthukrishnan

Modeling and Evaluation of Prefetching Policies for Context-Aware Information Services
V. de Nitto Persone, V. Grassi, and A. Morlupi

Panel 1: Proxy Based Networking vs. End-to-End Networking
Panel Organizers: Pravin Bhagwat & Richard LaMaire (IBM Research Division, USA)

Resource limitations of mobile hosts, such as CPU, memory, power, display, and bandwidth limitations, pose new challenges for protocol architects. Researchers in the proxy camp argue that specific protocol and application layer optimizations are needed to cope with these limitations. Since one size does not fit all, proxies are necessary to provide impedance matching between mobile and wired hosts.

However, the question is, "are proxies fundamental to providing networking services to mobile hosts?"

The proponents of end-to-end networking argue that within the framework of end-to-end protocols specific limitations of mobile hosts can be accommodated. For example, mobile clients can request low resolution content from servers using HTTP content negotiation rather than relying on proxies for content distillation services. Similarly, TCP and MobileIP can be used to connect mobile hosts directly to the Internet instead of using special-purpose protocol gateways.

The goal of this panel is to bring the advocates from both camps together and have a lively debate on this issue. The discussion will be a free form and opinions from the audience are solicited.

Armando Fox - UC Berkeley/Stanford, CA
David Johnson - Carnegie Mellon University, Pittsburgh, PA
Murray Mazer - Curl Corporation, Cambridge, MA
Srinivasan Seshan - IBM, T.J. Watson Research Center, NY

A Night on the Town - Dallas Style
Sightseeing tour of Dallas. Dinner on your own at Dallas Alley.

Wednesday, October 28

Paper Session 3: Ad Hoc Network Routing
Location-Aided Routing (LAR) in Mobile Ad Hoc Networks

Y. B. Ko and N. H. Vaidya

A Distance Routing Effect Algorithm for Mobility (DREAM)
S. Basagni, I. Chlamtac, V. R. Syrotiuk, and B. A. Woodward

A Performance Comparison of Multi-Hop Wireless Ad Hoc Network Routing Protocols
J. Broch, D. A. Maltz, D. B. Johnson, Y. C. Hu, and J. Jetcheva

Paper Session 4: Mobile Application Middleware
What is a File Synchronizer?

S. Balasubramaniam and B. C. Pierce

Mobile Awareness in a Wide Area Wireless Network of Info-Stations
T. Ye, H. A. Jacobsen, and R. Katz

StratOSphere: Mobile Processing of Ditributed Objects in JAVA
D. Wu, D. Agrawal, and A. El Abbadi

Exhibits Open

Conference Luncheon with Speaker

Paper Session 5: System Design for Mobile Applications and Networks
Towards a Design Methodology for Adaptive Applications

M. McIlhagga, A. Lightm and I. Wakeman

Flexible Network Support for Mobility
X. Zhao, C. Castelluccia, and M. Baker

Power Management Techniques for Mobile Communications
R. Kravets and P. Krishnan

Paper Session 6: Adaptive Networking for Mobility
Rate Adaptation Schemes in Networks with Mobile Hosts

A. K. Talukdar, B. R. Badrinath, A. Acharya

Power-Aware Routing in Mobile Ad Hoc Networks
S. Singh, M. Woo, and C. S. Raghavendra

On Programmable Universal Mobile Channels in a Cellular Internet
R. R. F. Liao and A. T. Campbell

Conference Banquet

Thursday, October 29

Exhibit Hall

Paper Session 7: Location Management
Multi-Sensor Location Tracking

U. Leonhardt and J. Magee

An Efficient Mobility Management Strategy for Personal Communication Systems
Y. Bejerano and I. Cidon

Optimal Location Management Algorithms for Mobile Networks
G. Krishnamurthi, A. Somani, and M. Azizoglu

Paper Session 8: Wireless ATM
Effective Bandwidth in Wireless ATM Networks

J. G. Kim and M. Krunz
Performance Evaluation of Path Optimization Schemes for Inter-Switch Handoffs in Wireless ATM Networks
V. Wong, H. Chan, and V. Leung
Integration of Circuit and Packet Switched Transport in a Third Generation Mobile Network
A. Calvi and F. J. C. Hila

Conference Luncheon with Speaker
Speaker: Mahmoud Naghshineh of Bluetooth

Panel 2: Security in Mobile Systems
Panel Organizer: Anupam Joshi (University of Missouri, USA)

With the increasing use of networked systems to perform routine information gathering and computing tasks, the need for security in such systems has taken center stage. The number of users accessing the networked infrastructure from mobile clients has been increasing, and is projected to take off in the coming decade. Thus providing secure network access from mobile systems will be of increasing interest to vendors as well as consumers. This panel will discuss whether ongoing efforts in creating secure networked systems apply more or less as is to the mobile world, or whether they have inherent assumptions that would make their operation difficult in presence of mobility related constraints. Do issues such as asymmetry between communication endpoints, low and variable bandwidth, (elective) disconnections, ease of "snooping", rouge servers/MSRs etc. require a re-examination of standard security mechanisms? Or are they red herrings-problems that seem difficult but that can be solved by minor modifications of existing techniques?

Elisa Bertino - University of Milano, Italy
V. Bhargavan - UIUC, USA
M. Kaiserwerth - IBM, USA
M. Streenstup - BBN, USA

Paper Session 9: Connection Admission-Control
Comparison of Connection Admission-Control Schemes in the Presence of Hand-Offs in Cellular Networks

S. Choi and K. G. Shin

A Call Admission Control Scheme for TCP/IP Based CDMA Voice/Data Network
S. Sen, J. Jawanda, K. Basu, N. Kakani, and S. Das

Undeniable Billing in Mobile Communications
J. Zhou and K. Y. Lam

Friday, October 30

Dial M for Mobility

Second International Workshop on Discrete Algorithms and Methods for Mobile Computing and Communications

The workshop DIAL M for Mobility is devoted to discrete algorithms and discrete modelling in the context of mobile and wireless computing and communications. It is intended to be a lively meeting, covering many of the algorithmic and discrete aspects of this field going from operations research to radio engineering problems. It aims, in particular, at fostering the cooperation among practitioners and theoreticians of the field. Following the success of the first workshop held jointly with Mobicom 97 in Budapest, DIAL M for Mobility will be co-located with ACM/IEEE MobiCom 98 and will be composed of contributed and invited talks.


First International Workshop on Wireless Mobile Multimedia

The objective of this workshop is to provide a forum for researchers and technologists to present their contributions as technical papers, online demos of service applications or technology related to wireless multimedia. The issues and challenges for the development of wireless multimedia networks not only encompass a broad spectrum of research topics such as quality-of-service provisioning, broadband wireless, network support, handover etc., but also involves a way to envision the evolution of the next generation telecommunication networks.


WOSBIS'98 - Third ACM/IEEE International Workshop on Satellite-Based Information Services

In conjunction with the widely recognized primer conference in MOBICOM'98, this workshop provides a forum for exploratory research contributions on satellite applications and services. The services are characterized by direct or global broadcast capabilities of LEO, MEO, GEO satellites, low setup costs, high and possibly asymmetric bandwidth, and unconventional network routing/switching. Applications of such services are often real-time, mobile, high bandwidth, and multicast. They include telemedicine, public information services, education, entertainment, Internet access, digital battlefield, emergency and disaster response, etc.

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