UMTS - ορισμός. Τι είναι το UMTS
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Τι (ποιος) είναι UMTS - ορισμός

THIRD GENERATION MOBILE CELLULAR SYSTEM FOR NETWORKS
UMTS (telecommunication); W-CDMA; TD-SCDMA; WCDMA; Universal Mobile Telephone System; Umts; UMTS-TDD; TD-CDMA; UTRA TDD-HCR; Wideband Code Division Multiple Access; Wideband CDMA; TDSCDMA; Time Division-Synchronous Code Division Multiple Access; Time Division Synchronous Code Division Multiple Access; UTRA-TDD HCR; UTRA-TDD LCR; UTRA TDD-LCR; UTRA; UMTS-FDD; UARFCN; TD SCDMA; Wideband code division multiple access; Universal mobile telecommunications system; List of TD-SCDMA networks; Universal Mobile Telecommunications System; UTRA-TDD; Uu interface
  • 3G sign shown in notification bar on an Android powered smartphone
  • UMTS base station on the roof of a building
  • UMTS network architecture
  • UMTS network architecture

UMTS         
Universal Mobile Telecommunications System (Reference: IN, mobile-systems)
UMTS         
¦ abbreviation Universal Mobile Telephone System.

Βικιπαίδεια

UMTS

The Universal Mobile Telecommunications System (UMTS) is a third generation mobile cellular system for networks based on the GSM standard. Developed and maintained by the 3GPP (3rd Generation Partnership Project), UMTS is a component of the International Telecommunication Union IMT-2000 standard set and compares with the CDMA2000 standard set for networks based on the competing cdmaOne technology. UMTS uses wideband code-division multiple access (W-CDMA) radio access technology to offer greater spectral efficiency and bandwidth to mobile network operators.

UMTS specifies a complete network system, which includes the radio access network (UMTS Terrestrial Radio Access Network, or UTRAN), the core network (Mobile Application Part, or MAP) and the authentication of users via SIM (subscriber identity module) cards.

The technology described in UMTS is sometimes also referred to as Freedom of Mobile Multimedia Access (FOMA) or 3GSM.

Unlike EDGE (IMT Single-Carrier, based on GSM) and CDMA2000 (IMT Multi-Carrier), UMTS requires new base stations and new frequency allocations.

Παραδείγματα από το σώμα κειμένου για UMTS
1. When they move out of range, the connection will automatically revert to a GSM, GPRS or UMTS mobile phone network.
2. UMTS is a 3G standard supporting a theoretical data throughput of up to 2 megabits per second.
3. Outside of the United States, the iPhone‘s tri–band (850/1'00/2100) UMTS/HSDPA support will deliver 3G coverage around the world.
4. Arab News Sony Ericsson has added the first UMTS handset to its Walkman range of music phones bringing the total number of phones in the range to four.
5. Siemens is bidding for multi–million euro contracts in Bahrain, Oman and Kuwait for building and expanding each country‘s UMTS network.