Docstoc

CarTel

Document Sample
CarTel Powered By Docstoc
					 Bubble-Sensing: A New Paradigm
    for Binding a Sensing Task
to the Physical World using Mobile
              Phones
 Hong Lu , Nicholas D. Lane, Shane B. Eisenman,
              Andrew T. Campbell
               Dartmouth College
    Bubble Sensing
•Idea
    • Sensing Bubble
    Opportunistically leverage cell phone
      • (action, region, duration)
    density within the area to maintain
    coverage

Virtual roles
•   Bubble creator
•   Bubble anchor
•   Bubble carrier
         Take a photo here !!
•   Sensing node

                                   Bubble-Sensing
                                 hong@cs.dartmouth.edu
Bubble Creation Phase


                    Bubble Server




         Bubble Anchor
                    Bubble Creator

Mobile Sensor     Mobile Sensor


                                       Bubble-Sensing
                                     hong@cs.dartmouth.edu
Bubble Maintenance Phase


                    Bubble Server




       Bubble Anchor
         Bubble Anchor


 Mobile Sensor    Mobile Sensor


                                      Bubble-Sensing
                                    hong@cs.dartmouth.edu
Bubble Restoration Phase


                   Bubble Server




   Bubble Anchor



                   Mobile Sensor


                                     Bubble-Sensing
                                   hong@cs.dartmouth.edu
      Bubble Restoration Phase


                              Bubble Server




Bubble carrier
                    Bubble Anchor
                                          Mobile Sensor

        Mobile Sensor


                                                            Bubble-Sensing
                                                          hong@cs.dartmouth.edu
Test bed Implementation
 • Device
    • Nokia N95,
    • Nokia N80 + BlueCel dongle

 • Pys60

 • WiFi based communication
    • Ad-Hoc mode
    • infrastructure mode
    • 4mw

 • Beacon based WiFi localization

 • The sensing task:
    • Take sound clips
                                      Bubble-Sensing
                                    hong@cs.dartmouth.edu
Sensing Coverage over Time




                    Bubble-Sensing
                  hong@cs.dartmouth.edu
Fidelity




             Bubble-Sensing
           hong@cs.dartmouth.edu
 Related Work
• Mobile phone as a sensing device
  • UCLA, UIUC, MIT, Ohio State
  • Nokia, Motorola, Intel, Microsoft
• Exploit location information
  • Routing, Geocast
  • geographic storage, DCS, GHT
• Theoretical work
  • Virtual static node

                                 Bubble-Sensing
                               hong@cs.dartmouth.edu
Thanks for
 Listening

          Bubble-Sensing
        hong@cs.dartmouth.edu

				
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
views:14
posted:8/31/2011
language:English
pages:11