Pervasive Computing

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Pervasive Computing

• Parts of the slides are extracted from those of
  Profs. Mark Weiser, Deborah Estrin, Akbar Sayeed,
  Jack Stankovic, Mani Srivastava, Esa Tuulari,
  Qiong Luo, Chung-Ta King, and so on.

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The Trends in Computing Technology

• 1970s
• 1990s
• Late 1990s
• Now and Tomorrow ?

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Pervasive Computing Era
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Computing Evolution
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Ubiquitous Computing

• Mark Weiser, Xerox PARC 1988
• Ubiquitous computing enhances computer use by
  making many computers available throughout the
  physical environment, but making them effectively
  invisible to the user.

Source Weiser, 1993a
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Pervasive (Ubiquitous) Computing Vision

• In the 21st century the technology revolution
  will move into the everyday, the small and the
  invisible
• The most profound technologies are those that
  disappear. They weave themselves into the fabrics
  of everyday life until they are indistinguishable
  from it.
• Mark Weiser (1952 1999), XEROX PARC

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What is Ubiquitous Computing?

• Ubiquitous computing (ubicomp) is a post-desktop
  model of human-computer interaction in which
  information processing has been thoroughly
  integrated into everyday objects and activities.
• As opposed to the desktop paradigm, in which a
  single user consciously engages a single device
  for a specialized purpose, someone "using"
  ubiquitous computing engages many computational
  devices and systems simultaneously, in the course
  of ordinary activities, and may not necessarily
  even be aware that they are doing so. from
  Wiki

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Related Topics

• Several terms that share a common vision
• Everyware
• Physical Computing
• Sentient Computing
• Ambient Intelligence
• Wearable Computing
• Context Awareness
• ...

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Pervasive Computing Phase I

• Small, cheap, mobile processors and sensors are
• in almost all everyday objects (smart object)
• on your body (wearable computing)
• embedded in the environment (ambient
  intelligence)

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Smart Objects
Smart objects can process and remember pertinent
events

• Real world objects are enriched with information
  processing capabilities
• Embedded processors
• in everyday objects
• small, cheap, lightweight
• Communication capability
• wired or wireless
• Self-organizing networking
• Sensors and actuators
• Location/situation/contextawareness
• Interact with physical world

Smart objects can communicate with each other
Smart objects have context-sensitive behavior
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Smart Objects (cont.)
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Outline of the Course (1)

• Introduction to Pervasive Computing
• Wireless Communications
• Mobile Ad Hoc Networks (MANETs)
• Wireless Sensor Networks (WSNs)
• Wireless Mesh Networks (WMNs)
• Routing Protocols
• Secure Routing Protocols
• Anonymous Routing Protocols
• Media Access Control (MAC) Protocols
• Energy-Efficient MAC Protocols

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Outline of the Course (2)

• WSN Coverage and Connectivity Maintenance
• WSN Deployment
• Data-Centric Routing for WSNs
• Congestion Control and Avoidance for WSNs
• WSN Data Aggregation
• Localization and Location Service
• Geographical Routing
• Event Detection and Target Tracking
• RFID and RFID anti-collision algorithms
• Mobile Sensor Navigation in WSNs
• Ubiquitous Guiding System

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• QA