Difference between 1g 2g 3g 4g 5g technology pdf

UMTS network works with 850 MHz, 1900 MHz and 2.1 GHz frequency band. GSM 900 also works for other small carriers but mainly of those two bands. GSM network in US works in, 850 MHz and 1900 MHz. But they operate in the whole US due to domestic roaming with other carriers. US cellular, other smaller carriers and MVNOs have coverage and network for selected regions only. 1G or (1-G) refers to the first generation of wireless telephone technology (mobile telecommunications).These are the analog telecommunication standards that were introduced in 1979 and the early to mid-1980s and continued until being replaced by 2G digital telecommunications. Cellular operator like AT&T and T Mobile have network of GSM and its family (2G, 3G UMTS) whereas Verizon, Sprint and US Cellular have CDMA network and its family (CDMA 2G and EVDO 3G). Although there are GSM technology in US, they preferred CDMA for a long time, being their own home grown technology. There are mainly five big Mobile Network Operators in US. This post, we are posting the different frequency bands in US and the cellular technology used. WiMAX 16e (Worldwide Interoperability for Microwave Access) Long Term Evolution (LTE) 4G: Very High-Speed Data. People there and outside need to be aware for those different frequency bands. Two Tracks for 1G/2G/3G: Europe 3GPP (3rd Generation Partnership Project) North America 3GPP2 3.9G: High-Speed Data. So, smartphone vendors make a separate variant for US with the selected US frequency bands. Even though the cellular technologies are of the same that is popular in the world, they operate in different frequency bands. US is one of the largest, advanced and saturated market for telecommunications.

Difference between 1g 2g 3g 4g 5g technology pdf