A Flexible, Interoperable Framework for Active Spaces

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A Flexible, Interoperable Framework for Active
Spaces

• Fabio Kon Chris Hess Manuel Roman
• Roy Campbell M. Dennis Mickunas
• Department of Computer Science
• University of Illinois at Urbana-Champaign

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Introduction

• Active Spaces Physical spaces augmented with
  computing devices and software to enhance its
  capabilities.
• Examples offices, lecture and meeting rooms,
  homes, hospitals, campuses, airports, cities,
  highways, ...

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Priority 1Managing Dynamism

• Mobile users
• Mobile devices
• Mobile Software
• Evolving Software
• new component versions
• new configurations
• Evolving Hardware
• Replacing old devices by new ones
• Reconfiguring devices

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Our Approach

• 2K Network-Centric OS a meta-OS that provides
  support for any kind of dynamic, heterogeneous
  environment.
• Gaia provides services directly related to
  supporting physical active spaces.

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The 2k Network-Centric OS

• Runs as middleware on top of Solaris, Linux,
  Windows.
• Goal Facilitate the management of dynamic,
  heterogeneous systems by
• developers,
• system administrators, and
• users.

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Scope of 2K Research

• 1. Interoperability
• (IDL, CORBA, reflective ORBS, minimal ORBs)
• 2. Naming and Trading (OMG standard)
• 3. Component-based services and applications
• 4. Dynamic (re)configuration
• 5. Security and Privacy

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Scope of 2K Research

• 6. Distributed Resource Management
• 7. Quality of Service
• 8. Monitoring
• 9. Fault-Tolerance
• But, remember
• Not all these features are required all the time.
  So, configurability is the key.

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Gaia Getting Physical

• In addition to the 2K functionality, must have
• Federation of CORBA Name Servers
• Federation of CORBA Traders
• Object-Oriented Framework to represent
  heterogeneous devices
• Location Service (for things that move fast)
• Event Service (supporting discovery
  reconfiguration)
• Bridges/adapters to other models (e.g. Jini)

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Representing Physical Spaces
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Using the Trader FederationTo Locate Devices

• printerOffer
• DCLTrader-gtquery(printer,
• Postscript True and
  PagesPerMinute gt 10,
• min (Price))
• myPrinter printerOffer.reference
• myPrinterProperties printerOffer.properties
• myPrinter-gtprint (myFile)
• cout ltlt Your file is being printed in room ltlt
  myPrinterPropertiesROOM ltlt endl

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Framework for Representing Heterogeneous Devices

• Plan9 and UNIX use a single FILE interface for
  accessing all devices.
• Many times this is not appropriate.
• Other extreme having an independent interface
  for each new device.
• Difficult to manage and to program.
• Intermediate approach
• Object-Oriented Framework for Devices.

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Inheritance Diagram for Active Space Entities
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Ongoing Work

• Integration of all current services in
  experimental Active Spaces at the University of
  Illinois
• Sensing / Tracking / Visual Recognition
• Adaptive Networking
• Supporting Adaptive Applications
• Power Management for Mobile Devices
• Rendering Realistic 3D Models

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How to contact us

• f-kon,roy_at_cs.uiuc.edu
• 2K Web site
• http//choices.cs.uiuc.edu/2K
• Active Spaces Web site
• http//choices.cs.uiuc.edu/ActiveSpaces

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The 2K Architecture