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Mobile Systems

I201 Organisational Systems. Mobile Systems. Content. Cell phones Media Players Portable Storage Laptops PDA’s. Learning Outcomes. Define and explain the differences between 1G, 2G, 3G and 4G networks Describe the cause of the Telecom XT failures

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Mobile Systems

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  1. I201 Organisational Systems Mobile Systems

  2. Content • Cell phones • Media Players • Portable Storage • Laptops • PDA’s

  3. Learning Outcomes • Define and explain the differences between 1G, 2G, 3G and 4G networks • Describe the cause of the Telecom XT failures • List different mobile phone operating systems • Define the evolution of Media Players • Identify and describe five different types of portable storage • Explain what impact Wireless LAN has had on the laptop industry • Define the term PDA and explain their uses • Describe a current/future trend in mobile systems

  4. Mobile Systems • Mobile: • Capable of moving or moving readily (especially from place to place) • http://dictionary.reference.com/browse/mobile • System: • A working combination of hardware, software, and data communications devices • http://dictionary.reference.com/browse/system

  5. Cellular Telephones Mobile Systems

  6. Cellular Telephones • History Lesson • 1984 • 1G (first generation) • Motorola DynaTAC 8000X • Weight: ~1kg • 30 minutes talk time per charge • Only $3995 (USD) • Digital signalling to connect • Analogue transmission

  7. Cellular Telephones • History Lesson • 1990’s • 2G (second generation) • Digital signalling to connect • Digital Transmission • Text Messaging (GSM) • Two main categories: • TDMA – Time based (GSM) • Vodafone • CDMA – Code based • Telecom (old)

  8. Cellular Telephones • More Recently • 2000’s • 3G (third generation) • IMT-2000 standard • Video calls • Broadband wireless datatransfer

  9. Cellular Telephones • Future • 4G (fourth generation) • High network capacity • A nominal data rate of 100 Mbit/s while the client physically moves at high speeds relative to the station, • 1 Gbit/s while client and station are in relatively fixed positions • A data rate of at least 100 Mbit/s between any two points in the world • Smooth handoff across heterogeneous networks • Seamless connectivity and global roaming across multiple networks • High quality of service for next generation multimedia support • real time audio • high speed data • HDTV video content • mobile TV • Interoperability with existing wireless standards • An all IP, packet switched network • http://www.ibtimes.com/articles/24411/20100520/4g-phone.htm • http://news.cnet.com/8301-1035_3-20004833-94.html • http://www.msnbc.msn.com/id/37241828/ns/technology_and_science-wireless/

  10. Cell phone Generations • 1G • 2G • 3G • 4G • Refers to the network that a particular phone is capable of functioning on.

  11. Telecom XT • Summary of events • http://www.telecom.co.nz/mobile/ournetwork/insidext/xtexplained • Core Problem • XT initially only had two RNC’s(Radio Network Controllers) for all of New Zealand (one in Christchurch, one in Auckland) ~$12 mil each • This created a single point of failure for each half of NZ • Each RNC manages the traffic of ~450 cell sites each • An upgrade required all cell sites to reconnect, this occurred at the same time and crashed the RNC (like a denial of service attack) • When the Christchurch RNC failed, ~450 cell sites couldn’t process traffic • Now they have four, soon they will have six (3 for each half) • http://www.telecom.co.nz/mobile/ournetwork/insidext/networkupgrade • XT Now needs to be re-branded • http://www.stuff.co.nz/business/industries/3636818/Telecom-XT-set-for-new-look

  12. Cellphone OS • Initially Cellphone software was very basic • (i.e. list of contacts, make calls, send texts, display a clock, maybe even a calendar) • Now Cellphone software has evolved into fully fledged operating systems, including: • iPhone (Apple) • Android (Google) • Windows Mobile 6.5 (Microsoft) • Phone7 (Microsoft) • Blackberry (Research in Motion) • Bada (Samsung)

  13. Spot the OS • Which is which?

  14. Media Players Mobile Systems

  15. Media Players • Quick history Lesson • 1979 1984 ~2001 Walkman -> Discman -> Mp3 Player + Video

  16. Portable Storage Mobile Systems

  17. Portable Storage • Quick History Lesson • 1971 8 inch (60-500 kb) • 1977 5 ¼ inch (90kb – 1mb) • 1980 3 ½ inch (280kb – 1.44mb) • 1982 CD-ROM (700mb) • 1990 CD-R • 1997 CD-RW

  18. Portable Storage • Quick History Lesson • 1994 Zip Drive (750Mb) • 1995 Jaz Drive (2Gb) • ~1996 DVD (4.7 – 17 GB) • 1999 DVD-RW • ~2006 Blu-ray (25-100GB) • 2000 USB Flash Drive (8Mb) • 2008 (64GB) USB Drive ($250 NZD) • Now 128 256 GB USB Drives • 8TB portable drives (not usb)

  19. Laptops Mobile Systems

  20. Laptops, Portable Computers • History • 1975 IBM 5100 • 1981 Osborne 1 • 1983 Epson HX-20(A4 Size, 1.6kg) • 1982-83 Clamshell design • GRiD Compass • Gavilan SC (“laptop”) • Sharp PC-5000

  21. Laptops • History • 1986 Compaq SLT/286 • 1989 NEC Ultralite • 1989 Macintosh Portable • 1989 Zenith MinisPort • 1989 Compaq LTE • 1991 Macintosh Powerbook • 1992 IBM Thinkpad • 1990’s -> Now • Cheaper • Faster • Internet Connections • Tablets…

  22. Laptops, Wireless LAN • 1990’s • Wireless LAN • Wi-Fi • 802.11 IEEE Standard • Originally expensive and only used where traditional cabling wasn’t possible • Now used extensively with laptops • Has become an expected feature of laptops

  23. Intel Wireless Laptop Surfboard

  24. PDA’s Mobile Systems

  25. PDA - Personal Digital Assistant • History Lesson • 1983 • Casio PF-3000 • Phone Numbers • Schedule • Memos • Literally a glorified calculator

  26. PDA - Personal Digital Assistant • History Lesson • 1984 - Psion Organizer • 1986 – Psion Organizer II • Flat file database • Alarm Clock • (OPL) Organizer Programming Language • Removable Storage(Write Once)

  27. PDA - Personal Digital Assistant • History Lesson • 1988 • Sharp Wizard • Bigger screen • A port to connect to: • Computers, Printers, Tape Backup • 32Kb of Memory • 40 x 16 black white LCD screen • QWERTY keyboard in later models • Orientation change in later models

  28. PDA - Personal Digital Assistant • History Lesson • 1993 • Apple Newton MessagePad • No Keyboard (Virtual) • Newton OS • Handwriting recognition • Intuitive design (scratch out) • 640Kb RAM • 4 x AAA Batteries

  29. PDA - Personal Digital Assistant • History Lesson • 1996 • Palm • Pilot 1000 Personal • Pilot 5000 Professional • Commercial success • Better* handwriting recognition • Cheaper • Pilot 5000 – Up to 2Mb of RAM • Synchronization with PC’s • Wireless internet (1999) Palm VII

  30. PDA – Personal Digital Assistant • Commercial success of the Palm Pilot • A flood of other PDA were released into the market • Each with there own pros and cons • Bigger displays • Colour screens • More memory • Longer batter life • GPS • Games • … http://pdadb.net/index.php?m=pdalist&list=pda

  31. Uses of Mobile Systems • Mobile data entry/access • Communication • Collaboration • Mobile barcode scanners • Mobile food orders (McDonalds) • Mobile real time order processing • Mobile synchronous information management • Synchronous, current,information access, anytime, anywhere, anyway, anyhow

  32. Summary • Now/Future • Convergence trend: • PDA • Mobile Phones • Media players • Portable Storage • Laptops • Integration off all of these technologies into a single handheld device • Media playing USB drive PDA Phone with Internet Access

  33. Review • Can you: • Define and explain the differences between 1G, 2G, 3G and 4G networks? • Describe the cause of the Telecom XT failures? • List different mobile phone operating systems? • Define the evolution of Media Players? • Identify and describe five different types of portable storage? • Explain what impact Wireless LAN has had on the laptop industry? • Define the term PDA and explain their uses? • Describe a current/future trend in mobile systems?

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