Q17Mobile Computing
Question
Explain the various generations of cellular networks (1G, 2G, 3G, 4G).
Answer
Generations evolved from analog voice (1G), to digital voice and text (2G), mobile broadband data (3G), to all-IP high-speed networks (4G).
The evolution of cellular networks is marked by generations. 1G networks (like AMPS) were analog systems designed exclusively for voice calls. 2G networks (like GSM and CDMA) introduced digital encryption, improving voice quality and adding data services like SMS and basic email. 3G networks (like UMTS and CDMA2000) significantly increased data transfer rates, enabling mobile internet browsing, video calling, and multimedia streaming. 4G networks (like LTE) shifted to an all-IP architecture, providing substantially higher bandwidth, lower latency, and support for high-definition video streaming, mobile gaming, and advanced mobile web access.