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Ubiquitous GIS Part I: Basic Concepts of Ubiquitous GIS

Ubiquitous GIS Part I: Basic Concepts of Ubiquitous GIS. Fall 2007 Ki-Joune Li http://isel.cs.pnu.edu/~lik Pusan National University. Plan. Part I: Basic Concepts of Ubiquitous GIS Part II: Geographic Context-Awareness Part III: Implementation Issues of Ubiquitous GIS

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Ubiquitous GIS Part I: Basic Concepts of Ubiquitous GIS

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  1. Ubiquitous GIS Part I: Basic Concepts of Ubiquitous GIS Fall 2007 Ki-Joune Li http://isel.cs.pnu.edu/~lik Pusan National University

  2. Plan • Part I: Basic Concepts of Ubiquitous GIS • Part II: Geographic Context-Awareness • Part III: Implementation Issues of Ubiquitous GIS • Part IV: Standardization Issues

  3. Part I: Basic Concepts of Ubiquitous GIS Ubiquitous Computing and Geographic Information Systems

  4. Cyber Space vs. Ubiquitous Space VS.

  5. Gates to Dive into Internet Space Real World user user user Internet Space and Virtual Reality Internet Space

  6. Real World Augmented Reality user user user user Bridge to connect Cyber space and real world Ubiquitous Space and Augmented Reality Cyber Space Ubiquitous Space

  7. Augmented Reality ?

  8. Example of Augmented Reality: Primitive One [Bauhaus Institute]

  9. Example of Augmented Reality: Overlapping Two Realities [Univ. Rochester] [INRIA]

  10. Example of Augmented Reality:Pedestrian Information

  11. Example of Augmented Reality

  12. Example: Scenario RetrieveContextInformation Detection by Sensor Provide AugmentedReality

  13. Interaction with the real world is substantial Real World Context-Awareness Context Awareness Augmented Reality Device A Keyword of Ubiquitous Computing

  14. Node Node Location Awareness in Ubiquitous Computing Where am I ? Who are around me ? Where will I be ? Who will be around me ? My location and Nodes to collaborate with me Location: A privileged data in UC

  15. What can we do with this compass ? We need a map ! Is location-awareness enough ? Nothing but a game !! Location-Awareness Map: Geographic Context

  16. Context-Awareness Static Context (Information-Driven) Dynamic Context (Sensor-Driven) Context Internal Context

  17. Spatial Context-Awareness(Geographic Awareness) Euclidean Space Static Context Dynamic Context Road Network Space Geographic Information Geo-Sensor Indoor Space SpatialContext Seamless Space My Status + Location, Speed, Orientation Internal Context

  18. Issues in Ubiquitous Computing Tiny System Scalability Small Size Memory Large number of mobile devices Small CPU Energy Problem Small Screen Communication Heterogeneity Limited Bandwidth Platform Limited Mobility Contents

  19. Communication Infrastructure Wireless Communication : Fundamental Requirement NOT Only ONE Communication : Convergence of Communication CDMA : Currently Available WiBro (Wireless Broadband) : Between CDMA and WLAN WLAN : High Speed, but Limited Area DMB : Broadcasting, One Way Communication MANET (Mobile Ad-Hoc Network) : Without Network Infrastructure Bluetooth : High Speed, but Very Limited Area

  20. Covergence Communication Infrastructure Requirements Mobility : WLAN (very limited), CDMA (>250 Km/h), WiBro (>60 Km/h ?) Bandwidth : Very Large Number of Messages due to Massive Parallelism WLAN (>1 Mbps), CDMA( 100Kbps), WiBro ( 1Mbps) Coverage : WLAN (100m), CDMA (1~3Km), WiBro(1Km) IPv6 and Ad-Hoc Network Cheap Price Security

  21. But Not Like This !

  22. Summary: Part I • Ubiquitous Computing Environment • Augmented Reality • Context-Awareness • Context-Awareness • Location-Awareness • Geographic (Spatial) Awareness • Issues for Ubiquitous Computing

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