|
 ETH Zurich :
Computer Science :
Pervasive Computing :
Distributed Systems :
Events :
Ubicomp Summer School :
Workshop Contributions
Summer School on Ubiquitous and Pervasive Computing
August 7-14, 2002, Schloss Dagstuhl, Germany
Workshop Contributions
Gerhard
Austaller: Context-Aware Infrastructures for Mobile Services
| At the Telecooperation Group we expect
future applications for mobile users are going to be built of several
services glued together. Not only services but also the service discovery
and orchestration will be context aware. In my presentation I focus on the
advantages of this approach and on its challenges. To illustrate the
advantages I will give some examples that demonstrate the effectivity of
our approach. |
Slides
Martin
Bauer: Nexus - A Platform for Context-Aware Systems
| The talk provides a short overview of
the Nexus project, which investigates concepts and methods for the support
of context-aware applications for mobile users, where the most important
context information is location. The goal is to develop a global platform
for context-aware applications with a federated, distributed and dynamic
model of the real world at its core that is augmented with virtual
information. |
Slides
| We present an introduction to the Bat
System, our high-resolution indoor positioning system installed throughout
our laboratory. We describe the physical layer construction and middleware
used to support context-aware applications. The presentation will cover
the successes and problems emerging from daily use of our ubiquitous
computing environment. We conclude with a summary of the ongoing sentient
computing research in our laboratory. |
Slides
Jan Beutel: Positioning in Ad-Hoc Networks
| I will give a short introduction to
positioning mechanisms for ad-hoc networks. A motivation for our approach to
integrate a multigranular positioning service in the network layer will be
presented as well as possible applications. Our approach is applicable both
for the relative as well as for the absolute positioning problem in a
multihop ad-hoc network. Some recent results showing the influence of range
quantization, error rate, network connectivity and topology are discussed.
These suggest the use of situation specific algorithms and filtering
mechanisms. I will conclude with a short demonstration of a simulation
environment we have developed. |
Slides
Sonja
Buchegger: Malice, Selfishness and Slander in Mobile Ad-Hoc Networks
| Nodes in mobile ad-hoc networks have to
cooperate in order to communicate, however, they might be selfish and want
to save power or downright malicious, trying to attack the network and
taking advantage of cooperating nodes. This talk is about how to detect
and isolate such misbehaving nodes based on observation, reputation, trust
and action. |
Slides
Thomas
Buchholz: Context-Aware Services for UMTS-Networks
| Current context-aware architectures were
not designed for UMTS-networks. To realize context-aware services in UMTS
service provisioning should be decoupled from context provisioning.
Therefore, Business models need to be developed. Accounting and privacy
become important issues. Furthermore, problems like finding the right
information and/or service in a wide-area network and questions of inter-
operability, roaming, and mass customization need to be
addressed. |
Slides
Jochen
Denzinger: designing ubicomp - the mutual influences of ubiquitous computing
and design.
| The thesis seeks to identify and depict
the influences of the concept of ubiquitous computing on design. Looking
on the effects of ubiquitous computing on the practice of design, the
study focusses furthermore on its impact on design-theory and
methodologies. It also seeks to delineate the contribution and possible
roles of design in ubiquitous computing. |
Slides
Esko
Dijk: Requirements for Future Ultrasound Location Systems
| Context Awareness application
requirements towards location systems will be presented, and it is shown
in what ways they affect the design of a future ultrasound location
system. Typically, minimal infrastructure and easy installation are
important requirements. |
Slides
Hannes
Frey: Marketplaces as Communication Patterns in Mobile Ad-Hoc Networks
| This talk motivates and gives a short
survey on a novel communication pattern for mobile multihop ad-hoc
networks which is based on a marketplace metaphor. In order to
substantially increase the probability that negotiating peers sucessfully
reach an agreement, communication is focused on a static geographic area,
called the marketplace. Users are not constrained to be at the marketplace
physically, but are allowed to utilize other ones mobile devices located
at the marketplace to let a software agent or a service installed on each
device negotiate with others on their behalf. |
Slides
Dominik
Heckmann: User Modeling and Ubiquitous Computing
| Intelligent environments will
communicate about users! Mobile information devices allow to carry user
models along. Permanent evaluation of user behaviour with different
systems and devices will lead to better user models and thus allow better
functions of adaptation like adaptive web-sites, recommended products,
navigation systems or speech interaction. My first steps towards a user
modeling exchange language (UserML) will be
described. |
Nataliya Hristova: Ad-me: A Context-Sensitive Advertising System within a Mobile Tourist Guide
| This talk provides the
requirements and perspectives for Ad-Me (Advertising for the
Mobile E-commerce user): an effective context and location-aware
mobile advertising system being developed at University College
Dublin (UCD). The next phase of electronic business growth will be
in the area of mobile e-commerce. At the moment however such
applications are still in their infancy and the translation from
"e" to "m" to "u" commerce is not a straightforward task. An
important class of m-commerce applications is that of Mobile
Advertising. Ad-Me is a mobile tourist guide that proactively
delivers advertisements to users based upon perceived individual
user needs and device infrastructure, together with user
location. A Multi-Agent Systems (MAS) design philosophy is
adopted. |
Slides
Tero
Häkkinen: Bluetooth And Smart Clothes
| Bluetooth has been suggested as
a solution to almost any wireless communication problem requiring
extremely small size and low power consumption. Communication
between components in wearable computing equipment is one of these
suggested application areas. However, the size and power
consumption of existing Bluetooth components is still fairly far
from negligible. Actually there are even better alternatives if
high bit rate is not needed, but the lack of ready-made protocol
solutions and compatibility with any existing devices makes them
difficult to use. The standardization of Bluetooth gives it a big
advantage. Availability of communication modules compatible with
existing portable computing devices saves a lot of work in
developing applications. Now that Bluetooth enabled and
programmable mobile phones and PDAs have started to come to the
market smart clothing applications could be built around a
commercially available small user interface device and embedded
sensors or peripheral units connected to it via
Bluetooth. |
Slides
| In the Smart-Its project we have
developed active, autonomous sensor nodes. The nodes feature a
microcontroller, a Bluetooth radio and various sensors on a sensor
board. I will briefly present the sensor node's design rational
and main features. |
Slides
Csaba Kiss Kalló: Wireless
Hot Spots with Location-Aware Services
| Since the number of portable
devices increased considerably in the last few years, it is
important to create infrastructure that offers services for these
systems. In the frame of our project we intend to build several
hot spots with Bluetooth, IEEE 802.11b, and GPRS access
points. These hot spots will offer location- and context-aware
services to devices equipped with these technologies.Since the
most of our results so far are related to the IEEE 802.11b
technology, this presentation is centered mainly on this aspect of
our project. |
Slides
Ursula
Kretschmer: GEIST - A Mobile AR Information System to Experience History in
an Immersive Environment
Goal of the GEIST project is the
prototypical development of an education system. Here, historical facts of
a town are transferred by a learning game. The users get a magic
equipment. It consists of a display like binoculars, orientation sensors,
and interaction tools. By use of these, they can watch the reality. At the
same time ghosts appear in front of a historical scenery. They invite to
solve tasks and to dive into the history of the environment. The scenery
consists of reconstructions of buildings. They stand on the same place as
they were during the 30 years war in Heidelberg and they are in the
viewing field of the users. This means, that the reality needs to be
superposed by the reconstructions.
This superimposing at the
accurate position requires methods in the field of Augmented Reality. The
learning game allows the users to move independently in the town. If they
enter a place which is interesting for the game and therefore for the
history of the town, the game will be continued. The sequence of the game
depends on the duration, which can be scheduled in advance, and the
frequented places. The sequence is different for all users. The end
depends on decisions of one's own, suggestions of solutions, and solved
tasks. The system uses different data bases. The users can get access to
them by help of a PDA (Personal Digital
Assistant). |
Slides
Rainer
Kroh: Ubiquitous Computing in a Vehicle Environment
| After a short presentation of
DaimlerChrysler Telematics Research I will talk about the need of
ubiquitous computing technologies in the field of vehicles. To exemplify
these needs I will present some service scenarios for a vehicle
environment and the idea of so-called
proactive-services. |
Slides
Tatiana Lashina:
Context-Aware Personal Remote Control
| The EasyAccess project at
Philips Research aims at natural and easy-to-use interaction
techniques of accessing vast amounts of digital data, audio and
video. The User-Centred Design approach forms the basis for our
research. Within EasyAccess we started a work package on
Context-Aware Personal Remote Control (PRC), as we call it. One
of our primary research objectives was to find meaningful
applications of context awareness in consumer
electronics. Currently, we see several trends in consumer
products; namely, information overload and the boost of
functionality increase the complexity of user interfaces making it
a serious issue. Context- aware applications provide a remedy, to
a certain extent, as they make use of implicit information
collected in the user environment. Another trend is that many
personal computing devices will increasingly show initiative
towards the user and attract user's attention. Today's mobile
devices either fail to attract our attention when necessary or
behave socially inappropriate by disturbing us at the moment we do
not want to be disturbed. In the PRC prototype we demonstrate how
the use of context information can enable the personal electronic
device behaving in an appropriate
way. |
Slides
Paul
Lukowicz: Distributed, Wearable, Context Recognition Systems
| The talk will discuss the current state
of our Lab's research on architecture concepts, models, and
implementations of wearable computing and sensing system. It will focus on
two aspects. First we will look at how complex context information about
the users's activity can be derived from an array of heterogeneous sensors
appropriately distributed over the user's body. I will then discuss
architectural issues involved in minimizing the power consumption of such
heterogenous distributed system, in particular through
computation/communication tradeoffs. |
Slides
| The development of location-based
applications and services is dependent on the existence of information
about the location of the user or mobile device. This positioning
information can be acquired using different tracking devices and be
interpreted on top of different space models (geographic and symbolic).
Besides the location we believe that other personal information can be
used to easily select the relevant information to a user in a certain
place. We think the management of location information should be done in a
Personal Manager because the interpretation of the location on top of
space model may be done differently from person to person, with different
interpretations of the space being done by the same person in the
time. |
Slides
Florian
Michahelles: Applying Smart-Its in an everday's environment:
Interactive Furniture Assembly
| The Smart-Its project is interested in
embedding sensing and computation in the real world: we have developed
"Smart-Its" - small-scale embedded devices that can be attached to everyday
objects to augment them with sensing, perception, computation, and
communication. We think of these "Smart-Its" as enabling technology
for building and testing ubiquitous computing scenarios.
In an experimental case study with a IKEA PAX wardrobe we proofed the
feasibility of this vision: By attaching computing devices and multiple
sensors onto different parts of the assembly parts the system can
recognize the actions of the user and determine the current state of
the assembly. The system can suggest the next most appropriate action
at any point in time. By this, referred to as proactive guidance, we
aim to overcome limitations of today's printed instructions. |
Martin
Muehlenbrock: VIP - Visitor Support by Contextual Information
| The VIP application project explores how
information fed to a portable device can be generated from a number of
context parameters. The application focuses on supporting a visitor who
moves around in a physical information rich space. Typical users include
visitors to our own research centre or visitors to a professional fair.
Both cases are examples of situations where the related information, e.g.
about projects, technologies, papers and people, is strongly correlated to
the current user context. As part of the visitor context, his location is
determined on the basis of the room-specific signal quality to different
access points in a wireless local area network. Data from the sensors as
well as information from the profiles is processed by using an inference
engine to derive higher-level information such as co-location, activity,
or entries of the visit diary. |
Slides
Tatsuo
Nakajima: Software Infrastructure for Home Computing
| My talk describes our system
infrastructure for building advanced home computing applications. Our
system consists of two components. The first component is middleware for
controlling home appliances, and the second component is middleware for
user interface management. The talk shows an overview, current status, and
future direction of our system. |
Slides
| Jini is considered as a technological
platform/architecture for the TangO conceptual model, which is a
conceptual model for modeling pervasive
systems. |
Slides
Mario
Pichler: Mobile and Ubiquitous Systems: What are the Open Issues?
| In this talk I want to ask the question
about the open issues (what is still missing?) that have to be solved in
order to achieve spontaneous interaction and interoperation in mobile and
ubiquitous systems. Is service discovery still an open issue? Do we need
improvements of hardware- and/or software infrastructures? Do we need
infrastructures or is the world going ad-hoc?
... |
Slides
Jaana
Rantanen: Smart Clothing Research at Tampere University of Technology
| Smart clothes are ordinary clothes with
added intelligence structures. This intelligence may be constructed using
electrical and non-electrical modules, which are embedded inside clothing.
In sophisticated solutions also the fabric material itself may be
intelligence. Clothing covers users from other people's eyes and protects
against surrounding environment and weather conditions. Smart clothes try
to be better clothes than ordinary ones improving the functionality of
ordinary clothing or sometimes also giving new functions and uses for
clothes. Application areas comprise everything between entertainment and
safety embodiments. Since the history of smart clothes is still quite
short and only few commercial smart clothing products have been available
there is an obvious need for basic research in this area. Additional
modules inside clothing decrease the wearing comfort and therefore every
additional module should be as lightweight and small as possible. Since
clothes are physically very near humans become usability issues
continuously more important. The smart clothing product should be as easy
to use and nice to wear as ordinary clothing. Smart clothing system is
often distributed all over the body area, which set demands for
communication and connections between different modules. Ordinary plastic
wires inside clothes cause inflexibility and are problematic between
different pieces of clothing. In many cases wireless communication and
conductive fibers as signal conductors are needed. Clothing like
properties are important therefore e.g. heavy batteries cannot be carried
and truly usable smart clothes should also be washable. In Technologies
Enabling Smart Clothing Project we are concentrating on basic research
including smart clothing concept, communication, power consumption, and
physical structure of smart clothing. |
Slides
Gerhard
Reitmayr: Augmented Reality as a User Interface for Mobile Computing
| Augmented Reality (AR), enhancing a
user’s perception of the real world with computer generated entities, and
mobile computing, allowing users to access and manipulate in-formation
anytime and independent of location, are two emerging user interface
technologies that show great promise. The combination of both into a
single system makes the power of computer enhanced interaction and
communication in the real world accessible anytime and everywhere. We will
describe our work to build a mobile Augmented Reality system that supports
true stereoscopic 3D graphics, direct interaction with virtual objects and
2D user interfaces. The system is assembled from off-the-shelf hardware
components and serves as a basic test bed for user interface experiments
related to computer supported collaborative work in Augmented Reality.
Finally we will give an overview of some experimental applications we are
developing in the area of location based
computing. |
Slides
| At HP Labs Grenoble, part of the
research we conduct aims at enabling the personalization of any
interaction with the digital world (web services, smart spaces,
user interface) while enforcing user privacy. The presentation
will focus on our approach to store and access user context
information. Indeed, personalization and context-aware
applications attempt to simplify access to and usage of an
increasing number of devices and services. However, both require
the availability of reliable context information to be
effective. We are designing a personal context storage system
acting as a context middleware layer on top of user devices in
charge of the consitency and availability of user context
information. |
Slides
Michael
Rohs: Entry Points into the ETH World Infostructure
| In the context of ETH World - an
initiative to establish a virtual campus augmenting the physical ETH - we
conduct a project called "Entry Points into the ETH World Infostructure".
Its main objectives are (1) the interweaving of the infostructure of ETH
World with the physical infrastructure of ETH; (2) the provision and
utilization of location information; and (3) the investigation and
evaluation of privacy and user acceptance
aspects. |
Slides
Johan
Sanneblad: Innovative Platforms for New Mobile Services
| One of our research areas in the Future
Applications Lab is to create new mobile services on devices such as PDAs
and Smartphones. To create these services (such as ad hoc network games
and mobile IM clients), we have created two platforms called GapiDraw and
OpenTrek. This short talk will introduce these platforms and highlight
some of their possibilities, making them the preferred choice for more
than one hundred active developers worldwide. |
Slides
Kulpreet
Singh: Proximity Based Group Communications for Ubiquitous Computing
| Communication models for ubiquitous
computing, with their inherent mobile, global requirements, could derive
considerable benefit from ad hoc networks with supporting ad hoc
communication paradigms. Models for communication in ad-hoc networks are
experiencing rapid development as a result of considerable research
effort. One such model is to incorporate the notion of 'proximity' into
ad-hoc communication. We will describe a version of this notion that uses
a group communication mechanism that incorporates a strong sense of
proximity. It is built on top of an ad-hoc network and will help in
elegantly solving numerous problems encountered in Ubiquitous Computing
such as gathering and distributing context, resource discovery, and
querying remote regions for presence of certain characteristics. We intend
to elaborate on this notion of Proximity Based Group Communication and
present how we feel they can be used to solve certain problems in
Ubiquitous Computing. |
Tore
Urnes: Session Retainment in Dynamic Service Landscapes
| The vision of ubiquitous computing
points towards a post-PC era where devices and services have a simpler,
more focused purpose. More elaborate tasks should be accomplished through
the spontaneous collaboration between devices and services. Technologies
such as ad-hoc wireless networks and decentralized peer-to-peer systems
appear well suited as facilitators of such spontenaety. Unfortunately, the
resulting computing environment suffers from frequent disconnections and
resource reroutings. This talk briefly describes work in progress looking
at how sessions with network services can be retained in a service
landscape where service bindings are dynamically
reconfigured. |
Andreas
Weissel: Power Management in Ubiquitous Computing
| Limiting battery lifetimes make energy
efficiency a most critical design metric for ubiquitous and pervasive
computing systems. The necessity of "ubiquitous power management" will
become even more explicit if heat dissipation, battery weight and size are
constrained. After a short overview of existing power management
techniques for ubiquitous computing I want to present "Process Cruise
Control", a scheduling policy which makes use of core frequency/voltage
scaling to reduce the energy consumption. We have tackled the problem of
finding the optimal process-specific execution speed in a time-sharing
environment. Embedded event counters, which register HW activations, serve
as the valuable source of information for the operating system scheduler.
Once we have characterized a system, Process Cruise Control determines the
optimal clock frequency of a thread according to its activation patterns
and without performance loss. |
Slides
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