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EDGE, GPRS, and 3G
Dr. Tiwana
Tiwana
EDGE, EGPRS, and other wireless networks 2.5G and 3G
Agenda2
Tiwana
Main Two-Way Wireless Technologies3
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
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
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
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
Tiwana
Wireless Spectrum Efficiency Increase
You’re
here
Million times faster?
Tiwana
How Cheap Does Wireless Ubiquity Get?
Tiwana
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