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Universal Mobile Telecommunications System
The Universal Mobile Telecommunications System (UMTS) is a broadband, packet-based, 3G mobile cellular system based upon GSM standards. The specifications of UMTS covers the entire network system, including the radio access network, the core network and user authentication.
Features
UMTS is a component of IMT-2000 standard of the International Telecommunications Union (ITU), developed by 3GPP.
It uses wideband code division multiple access (W-CDMA) air interface.
It provides transmission of text, digitized voice, video and multimedia.
It provides high bandwidth to mobile operators.
It gives a high data rate of 2Mbps. For High-Speed Downlink Packet Access (HSDPA) handsets, the data-rate is as high as 7.2 Mbps in the downlink connection.
It is also known as Freedom of Mobile Multimedia Access (FOMA).
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It encompasses specifications for the entire mobile network system −
Radio access network specified by UTRAN (UMTS Terrestrial Radio Access Network)
Core network specified by MAP (Mobile Application Part)
Authentication of the users by SIM (Subscriber Identity Module) cards.
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