NEXUS – Augmented World Models for Mobile …...Distributed Systems (IPVS) Breitwiesenstraße 20 -...
Transcript of 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
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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
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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...
...
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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
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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
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University of Stuttgart
IPVS
Research Group
“Distributed Systems“
(Almost) Automatically Generated Model
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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...
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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
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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