UMTS stands for the Universal Adaptable Telecommunication System. The UMTS arrangement is a wireless 3G (third generation) arrangement that provides top bandwidth articulation and abstracts account to users of adaptable devices. 3G is a chic of agenda cellular radio systems developed beneath the accepted IMT-2000 (International Adaptable Telecommunications-2000).
The 3G systems were created with the ambition of acceptance users to accept all-around advancement with casework including Internet, data, messaging, paging, and telephony. The abstraction was to accommodate constant account to adrift adaptable barter anywhere in the world. A aggregate of terrestrial-based wireless casework and digital transmissions were advised to accommodate this availability.
The UMTS arrangement is aswell alleged 3GSM (Global Arrangement for Adaptable communications) because it acquired from that system. The air interface for the UMTS arrangement is based on WCDMA (Wideband Code Division Multiple Access) and includes the HSPA (High Speed Packet Access) specification. The Internet agreement was based on GPRS (General-Packet Radio Service), which acquired into EDGE (Enhanced Abstracts ante for All-around Evolution, aka GSM Evolution), both of which were advised 2.5G standards.
There are several means in which the UMTS arrangement differs from above-mentioned systems. One way is that previously, cellular systems were mainly circuit-switched, while UMTS is packet-switched. It aswell has college bandwidth than antecedent systems.
The casework provided by UMTS accept three altered Quality of Account (QoS) ambition abstracts rates. These are 144 kbps (kilobytes per second) for digital use and alfresco rural use; 384 kbps for use in outdoors in burghal environments; and 2048 kbps for calm use and alfresco use that is low-range. There are four defined classes of serve. The communicative chic includes articulation services, video gaming, and video telephony. The alive chic includes multimedia, webcasting, and video on demand. The alternate chic includes web browsing, accessing databases, and arrangement gaming, while the accomplishments chic includes email, downloading, and SMS (Short Message Service) messaging.
LTE (Long Term Evolution) has developed out of UMTS. LTE and WiMAX (Worldwide Interoperability for Microwave ACceSs) are the two developments of 4G wireless networks, as of 2010. Whereas LTE started with the IMT-2000 accepted that underpins the UMTS arrangement and is sometimes referred to as UMTS LTE, while WiMAX draws on added standards.
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