Beyond iPhones: EDGE, GPRS, and (Web GPS)
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Transcript

  • 1. EDGE, GPRS, and 3G Dr. Tiwana
  • 2.
    • EDGE, EGPRS, and other wireless networks
    • 2.5G and 3G
    Agenda
  • 3. Main Two-Way Wireless Technologies
  • 4. GPRS and EDGE Technology    Download (kbit/s)    Upload (kbit/s)  GPRS 80.0 20.0 GPRS 60.0 40.0 EGPRS (EDGE) 236.8 59.2 EGPRS (EDGE) 177.6 118.4
  • 5.
    • packet oriented mobile data service
    • Global System for Mobile Communications (GSM) phones
    • data rates from 56 up to 114 kbit/s
    • GPRS is a best-effort packet switched service
      • not circuit switched, where a certain QoS is guaranteed
    General Packet Radio Service (GPRS)
  • 6.
    • extension on top of standard GSM
    • technically considered a 3G radio technology (“2.5G”)
    • three-fold increase in capacity of GSM/GPRS networks
    • higher data-rates by switching to more sophisticated coding
    • can be used for any packet switched application
    Enhanced Data rates for Global Evolution (EDGE)
  • 7.
    • Services include wide-area wireless voice telephony, video calls, and broadband wireless data
    • 14.4Mbit/s downlink and 5.8Mbit/s uplink
      • ITU does not clearly specify minimum or average speeds
      • various speeds sold under 3G label
    • 3G expected to provide 384 kbit/s at or below pedestrian speeds
      • But only 128 kbit/s in a moving car
    3G
  • 8. Wireless Spectrum Efficiency Increase You’re here Million times faster?
  • 9.  
  • 10. How Cheap Does Wireless Ubiquity Get?
  • 11. Quiz Review