Mobile network of third generation 3G-UMTS standard
The third generation (3G, 3-rd Generation)mobile communication started in 2002, 12 years after the beginning of its development. 3G includes a standard 3-UMTS, WCDMA and CDMA 2000. 3G provides speeds of 384 kbit / s to 2.4 Mbit / s. The new video call services, radio and TV- reception and more. 3G was launched first in Japan and to date 98% of consumers in the country enjoy it. Recent technical advances have led to the creation of 3.5 G standard, named HSDPA (High Speed Downlink Packet Access) , allowing speeds of 3 Mbit / s to 14 Mbit / s. Mtel are 5th in the world operator of this standard. 3.75 G or HSUPA is characterized by the same speeds but only when downloading data from the Internet and upload them on the Web. There are already several existing networks using this standard.
Universal Mobile Telecommunications System (UMTS, UMTS) is a third generation (or 3G shorted by AbbreviationFinder) mobile telecommunications technologies, which are also developed in 4G technology.Currently, the most common type of a UMTS uses W-CDMA as a major air interface. UMTS and used its W-CDMA standardized by 3GPP and is the European answer to the ITU IMT-2000 requirements for 3G cellular radio.
UMTS is capable of supporting high-speed aloud and data. The system supports multiple modes, including channel switching, packet switching and virtual channels. UMTS supports data transmission both via IP protocol and other protocols by allowing speeds up to 2 Mbps in fixed mobile terminals. The process speed of pedestrians will fall to around 384 kbps, and for moving vehicles-up to about 144 kbps.
The architecture of a UMTS network consists of three interrelated components: Core Network (CN), UMTS Terrestrial Radio Access Network (UTRAN) and User Equipment (UE). UTRAN provides two methods for radio access W-CDMA-FDD and TD-CDMA-TDD.
In the W-CDMA base station (BS) is directed to the antennas and a BS serves several cells.In W-CDMA abonata can have a simultaneous connection to two BS.
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