3G MOBILES networks
3G mobile networks are networks provide high data rates..abiut 384 Kbps.. the famous proposals for 3G networs are,,
-WCDMA the advancement of GSM in 3G and
- Cdma2000 the advancement of Cdma-one in 3G
there are also other standards in 3G networks but these two are mosr popular....
refering to UMTS.. its not a standard rather its a technology which states that " there should be services to users,, both data and voice,, regardless of the area in which they are,, that means roaming in the whole worls... for UMTS systems all the network in all the countries should be same..." this was stated by UMTS after which 3gpp and other organization strived to giva a common network and standard to all the countries.. they called for different standars.. and for this solution europe and its allies forwarded WCDMA, and america and its allies forwarded Cdma2000... similarly japan also proposed its own standard.. but WCDMA is generally accepted standard.. so that all the countries should deploy this standard and which can facilitate the whole worls roaming to users...
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