Evolution of Mobile Communication
1st Generation
Dual Band communications
450/500 MHz during 1964.
Features:
Wireless Voice Transmission
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2nd Generation
Known as GSM
First used in Finland in 1991
Uses Frequency Band: 900/1800 MHz
Features:
Digital Voice communication
SMS services
Voice Conferencing
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2.5th Generation
Enhancement of GSM to GPRS in `97
GPRS: General Packet Radio Services
Higher data transmission rate.
Features:
MMS
Internet Access
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2.75th Generation
EDGE: Enhanced Data Rates for GSM Evolution
in`99
3 GPRS Bands used simultaneously
Features:
Speeds up to 384 Kbps
Full internet access on mobiles
Emergency Number System
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3rd Generation
Launched in 2001
Band Usage: 2100 MHz
Features:
Speeds up to 3.5 Mbps
Video calling
Live Streaming
Live Gaming
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3.5th Generation
Enhancement to 3rd generation via HSDPA and
HSUPA.
Speeds up to 7.2 Mbps
Live Gaming
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Future : The 4th Generation
Speeds up to 5 Gbps while moving at a speed of
100Km/h.
Features:
Live TV
Ultra high speed internet access
High Definition (HD) video streaming