2G, 3G, 4G Services
Telecommunication technology 3G is the upgrade for 2G and 2.5G GPRS Networks, for faster internet speed. 3G fins application in wireless voice telephony, mobile internet access, fixed wireless Internet access, video calls, and mobile TV.
3G telecommunication networks support services that provide an information transfer rate of at least 0.2 Mbit/s. Later 3G releases often demoted 3.5G and 3.75G, also providing mobile broadband access of several Mbit/s to smartphones and mobile modems in laptop computers.
This ensures it can be applied to wireless voice telephony, mobile Internet access, fixed wireless Internet access, video calls, and mobile TV technologies.
The UMTS(Universal Mobile Telecommunications Service) system, first offered in 2001, standardized by 3GPS used primarily in Europe, Japan, China, and other regions predominated by GSM(Global System for Mobile) 2G system infrastructure.
Cell phones are typically UMTS and GSM. WiMAX (Worldwide Interoperability for Microwave Access) is a family of wireless communication standards based on the IEEE 802. 16 set of standards, which provide multiple physical layers and Media Access Control options.
Mobile WiMAX was a replacement candidate for cellular phone technologies such as GSM and CDMA or can be used as an overlay to increase capacity.
Fixed WiMAX is also considered as a wireless backhaul technology for 2G, 3G, and 4G networks in both developed and developing nations.
prepared by
Babu Singha