Download - Beyond iPhones: EDGE, GPRS, and (Web GPS)
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EDGE, GPRS, and 3G
Dr. Tiwana
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Tiwana
EDGE, EGPRS, and other wireless networks 2.5G and 3G
Agenda2
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Tiwana
Main Two-Way Wireless Technologies3
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Tiwana
GPRS and EDGE4
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
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Tiwana
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)5
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Tiwana
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)
6
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Tiwana
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
3G7
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Tiwana
Wireless Spectrum Efficiency Increase
You’re
here
Million times faster?
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Tiwana
How Cheap Does Wireless Ubiquity Get?
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Tiwana
Quiz Review