Universal Mobile Telecommunications System

Also known as UMTS

thumb|3G sign shown in notification bar on an Android powered smartphone

Wikidata facts

Image: UMTS structures.svg

Show 3 more facts

ACM Classification Code (2012): 10011538
Commons category: Universal Mobile Telecommunications System
short name: UMTS

Sources (3)

via Wikidata · CC0

~51 min read

Article

45 sections

Contents

Features
Air interfaces
W-CDMA (UTRA-FDD)
Development
Rationale for W-CDMA
Deployment
UTRA-TDD
TD-CDMA (UTRA-TDD 3.84 Mcps High Chip Rate (HCR))
TD-SCDMA (UTRA-TDD 1.28 Mcps Low Chip Rate (LCR))
Objectives
Technical highlights
History
Frequency bands & Deployments
Unlicensed UMTS-TDD
Comparison with UMTS-FDD
Deployment
Competing standards
Radio access network
Core network
Frequency bands and channel bandwidths
UARFCN
Spectrum allocation
Interoperability and global roaming
Handsets and modems
Other competing standards
Migrating from GSM/GPRS to UMTS
Problems and issues
Security issues
Releases
Release '99
Release 4
Release 5
Release 6
Release 7
Release 8
Release 9
See also
Other, non-UMTS, 3G and [[4G]] standards
Other information
Notes
References
Citations
Bibliography
Documentation
External links

thumb|3G sign shown in notification bar on an Android powered smartphone

The Universal Mobile Telecommunications System (UMTS) is a 3G mobile cellular system for networks based on the GSM standard. UMTS uses wideband code-division multiple access (W-CDMA) radio access technology to offer greater spectral efficiency and bandwidth to mobile network operators compared to previous 2G systems like GPRS and CSD. The original version of UMTS provides a peak theoretical data rate of 384 kbit/s.