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Lecture 1: October 4, 2004 Prof. Maria Papadopouli mgp@ics.forth.gr

CS 436-Fall 2004: Wireless Networks & Mobile Computing. Lecture 1: October 4, 2004 Prof. Maria Papadopouli mgp@ics.forth.gr. Roadmap. Short bio & statement Pervasive computing introduction Definition Pervasive computing systems Aura Sensors Telematics Smart homes Seminar mechanics.

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Lecture 1: October 4, 2004 Prof. Maria Papadopouli mgp@ics.forth.gr

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  1. CS 436-Fall 2004: • Wireless Networks & Mobile Computing Lecture 1: October 4, 2004 Prof. Maria Papadopouli mgp@ics.forth.gr

  2. Roadmap • Short bio & statement • Pervasive computing introduction • Definition • Pervasive computing systems • Aura • Sensors • Telematics • Smart homes • Seminar mechanics

  3. Short Bio • B.Sc. Department of Computer Science, University of Crete • M.Sc. Department of Computer Science, New York University • Ph.D. Department of Computer Science, Columbia University Several summer internships at T.J. Watson Research Lab, IBM, 2002 - Assistant Professor, Department of Computer Science, University of North Carolina at Chapel Hill • 2003/2004 & 2004/2005 The IBM Faculty Award • 2004 - Assistant Professor, Department of Computer Science, University of Crete

  4. A brief personal note University of Crete

  5. Collaborations of the Mobile Computing Group

  6. Why I am excited with this seminar • Great research area! Pervasive computing Wireless measurements (IBM Faculty Award, 2003/2004 and 2004/2005) Location-sensing Mobile computing applications • Collaborating with UoC students • Experimenting with cutting-edge technologies

  7. The Wireless Century • 19th century: invention of the telegraph, telephone • 20th century: radio, television, computers • 21th century: the second Information Age Wireless Century of Pervasive Computing

  8. Pervasive Computing “ The most profound technologies are those that disappear. They weave themselves into the fabric of everyday life until they are indistinguishable from it." Mark Weiser, 1991 Pervasive computing is the method of enhancing computer use by making many computers available throughout the physical environment, but making them effectively invisible to the user.

  9. Weiser’s Vision • The essence of that vision was the creation of environments saturated with computing and communication capability, yet gracefully integrated with human users • After a decade of hardware progress, many critical elements of pervasive computing that were exotic in 1991 are now viable commercial products: handheld and wearable computers, wireless LANs, and devices to sense and control appliances. • We are now well positioned to begin the quest for Weiser's vision.

  10. Research in Pervasive Computing • The most precious resource in a computer system is no longer its processor, memory, disk or network. Rather, it is a resource not subject to Moore's law: User Attention Today's systems distract a user in many explicit and implicit ways, thereby reducing his effectiveness. [Satya from CMU]

  11. Aura Project @ CMU Satya http://www-2.cs.cmu.edu/~aura/

  12. 'Robot Tarzan' helps forest work • Uses distributed sensors to acquire information • about the environment (changes in light, humidity, • carbon dioxide levels) • Gives scientists crucial indications & predictions about environmental change • Monitors plants (and even leaves!) over time using • spectrographic imaging • Has its own server & communicates with other devices & sensors • Goes to specific locations of interest and takes samples or analyzes particular areas

  13. About Treebot from UCLA http://news.bbc.co.uk/1/hi/technology/3340057.stm More info about sensors http://www.cens.ucla.edu/ Kaiser Estrin

  14. Research in Sensor Networks • Design and deployment of long-lived self-configuring Embedded Networked Sensing (ENS) systems • Research spanning the spectrum from a study of fundamental properties and algorithms to implementation of practical systems and testbeds • Development of a comprehensive understanding of how to systematically design, run, and manage ENS systems. • ENS systems are characterized by energy constraints, irregular configurations, time-varying topology, large scale and changing applications

  15. Sensors for global warming studies • Sensors embedded probes into the largest ice cap on mainland Europe (Jostedalsbreen, Norway) • Use of glacial activity to trace current global warming patterns & predict future climate changes

  16. Sensor nodes: motes • Signals at 902MHz over 40 feet at 19.2Kbps • Small devices 1.2’’x1.1’’ • Its transmitters use 1,000 times less power of cellular phones • Dust networks, wireless base stations, very small, powered by AA batteries

  17. Wearable computing www.bodymedia.com

  18. UNC tracker ceiling panels housing LEDs miniature camera cluster http://www.cs.unc.edu/~tracker/index.html sub-millimeter position accuracy and resolution

  19. Virtual Reality vs. Augmented Reality vs. Pervasive Computing

  20. USB Ethernet DSL UWB IEEE802.11b 11Mbps, 2.4GHz IEEE802.11a 54Mbps, 5GHz IEEE802.16 40Mbps per channel, 10-66GHz 3-10km mile range Mobile networks with 15Mbps in a cell Wired vs. Wireless access

  21. Cell phone extended as a remote control • Wireless wallpaper (made by kapto): isolates wireless LAN, let’s cellular out in a british aerospace company • New DoCoMo phone lets you unlock doors, buy sodas, … • 90’s told us that content matters a lot!

  22. NTT DOCOMO http://www.nttdocomo.com/corebiz/ubiquity/roppongi.html • A Radio Frequency Identification (RFID) tag is a small sophisticated radio • transmitter with a transmission radius of approximately 10 m • Transmits the tag's identification signal at regular intervals • Allows the user to transmit the ID signal at will. • Utilizing RFID tags with mobile phones or other communication devices • make it possible to provide location, time, and other useful information • tailored to individual user needs.

  23. Telematics • Entertainment • Useful information • Contribution to safety (e.g.,Teleaid, Telediagnosis) • Microprocessors, display, voice recognition • Telematic services by the end of 2006: • 90% of all luxury cars will offer telematic services & 50% of all cars • Examples: “OnStar”, “UConnect” bluetooth-enabled car kit

  24. Telematics (cont’d) • Within Germany, over 4,000 motorway sensors nationwide gather data non-stop, enabling the system to inform motorists of all developments as they happen. • The navigation system offers a suitable alternative route immediately if a traffic jam is reported.

  25. Home Smart Home • Memory aids: where did I put that bill ? • Remote control for appliances e.g., gesture pendant that recognizes and translates gestures • Context aware computing challenges How you define context ? Detection of false positives ? Benchmarking ? http://www.cc.gatech.edu/fce/ahri/projects/index.html

  26. Seminar Topics • Wireless data access • IEEE 802.11, bluetooth, and other wireless technologies • Mobile peer-to-peer systems • Location-sensing systems • Location-dependent services • Energy measurements & conservation • Measurements on wireless networks • Routing protocols for mobile devices • Sensor networks • Security issues on wireless access

  27. Class Mechanics: • Q: Is a seminar just like a course ? NO ! • Several students presentations • No final exams • Research paper or system implementation • Great opportunity to find interesting research projects, prepare B.Sc. Thesis, learn about graduate studies, summer internships, and experiment with new technology,

  28. Seminars & Meetings • Lectures: • Monday: 5-7 RA201 • Tuesday: 3-5 GO18 • Office hours: • Monday: 7-8 (subject to change) • Meet with each group in individual basis (TBA) • Meet with TA • Participation in the Mobile Computing Group meetings (TBA) • Send me an email and will include you in the mobile@ics.forth.gr

  29. Seminar Information On-Line • Web page: http://www.csd.uoc. gr/~hy436 • Email list: hy436-list@csd.uoc.gr • To subscribe: 1. send an email to majordom@csd.uoc.grwithoutany subject and with body text : subscribe hy436-list 2. a confirmation email should come back to you

  30. Textbooks • 802.11 Wireless Networks, The definitive guide. Matthew S. Gast, O'Reilly, 2002, ISBN 0-596-00183-5 • 802.11 Wireless LAN Fundamentals: a practical guide to understanding, designing, and operating 802.11WLANS, Roshan, Leary, CiscoPress.com • Reading material at the course web page

  31. Additional Textbooks (not required) • Ad Hoc Networking. Charles E. Perkins, Addison Wesley, 2001, ISBN 0-20130976-9 • Computer Networking A Top-Down Approach Featuring the Internet. James F. Kurose and Keith W. Ross, Addison Wesley, 2002, ISBN 0-201-477114 • Wireless Communications Principles and Practice.Theodore S. Rappaport, Prentice Hall (Second Edition), ISBN 0-13-042232-0

  32. TAs info • TA contact details • Manolis Spanakis spanakis@ics.forth.gr

  33. Grading • Project assignment 40% • Presentations 40% (4 paper presentations) • Final demo/presentation10% • Log and participation in the class 10% Evaluation at the end of each presentation Mid-term evaluation of your project

  34. Resources & infrastructure • PCMCIA cards (IEEE802.11b, bluetooth), laptops, PDAs, GPS, IEEE802.11b APs, wireless camera, sensors • Sophisticated infrastructure for monitoring of the wireless infrastructure (more than 500 wireless APs) • Lots of wireless measurement traces ready for analysis • Technical books • Contacts with mobile computing researchers from all over the world

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