nexus – augmented world models for mobile …...distributed systems (ipvs) breitwiesenstraße 20 -...
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University of Stuttgart
Institute of Parallel and Distributed Systems (IPVS)
Breitwiesenstraße 20 - 22D-70565 Stuttgart
NEXUS –Augmented World Models for Mobile
Context-aware Applications
August 2002
Martin Bauer
University of Stuttgart
IPVS
Research Group
“Distributed Systems“
Motivation
Mobile multi-functional Devices
(Embedded) interactive Systems-> „Smart Things“
Wireless Networks• WAN, LAN, PAN• Infrastructure-based, Ad Hoc
Sensor Technology• Identification • Position • State, Environment
Physical World Digital World
Context-aware Systems
NavigationLocation-based Services„Sentient Computing“
„Ubiquitous Computing“MiniaturizationDecline in prices
University of Stuttgart
IPVS
Research Group
“Distributed Systems“
Vision: Federated World Models
World Models
Information Spaces
Applications
Data from
Billions ofSensors
WWWDigital
Libraries
Federation
„Smart Factory“ City GuideNavigation...
...
University of Stuttgart
IPVS
Research Group
“Distributed Systems“
Vision: Nexus-PlatformConnects Physical and Digital World
Federated World ModelsSensor Integration, ConsistencyMetaphors for Linking InformationTemporal Concepts
Supports Model InteractionSynchronous: Spatial QueriesAsynchronous: Spatial
Predicates/EventsVisualization
Supportsinfrastructure-basedinfrastructureless, hybridSystems
Applications
PhysicalWorld
World Model
InformationSpaces
Nexus
University of Stuttgart
IPVS
Research Group
“Distributed Systems“
General Architecture
Umgebungs-modelldaten-
server
Application 1 Application 2
LocationService
Event Service
World Model
Federation
Spatial ModelServer
Other Services
University of Stuttgart
IPVS
Research Group
“Distributed Systems“
(Almost) Automatically Generated Model
University of Stuttgart
IPVS
Research Group
“Distributed Systems“
Spatial Events
• Proactivity is important in mobile, location-aware computing
• Can be supported by event observation/notification mechanism
Ask forautograph...
Meeting Event Enter Area Event
ShoesYou wantedto buy shoes...
University of Stuttgart
IPVS
Research Group
“Distributed Systems“
Event Service: Research Goals
Overall goal: Investigate architectures and mechanisms for Internet-scale event management
• Distributed observation of complex eventsSpecification of distributed eventsParameters for describing semantic aspects: event consumption policy, time issues Framework for distributed observationOptimal distribution of observation
• Delivery of event notifications
observer
eventnotification
recipient
event
event
University of Stuttgart
IPVS
Research Group
“Distributed Systems“
Thank you very much for your attention!
E-mail: [email protected]
Project URL: http://www.nexus.uni-stuttgart.de