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ETSI - European Telecommunication Standard Institute(ETSI) produces globally-applicable standards for information and telecommunication technologies (ICT) including land, mobile, radio, converged, broadcast and internet technologies.
Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Technical Specification Group working methods (3GPP TR 21.900 version 8.1.1 Release 8)
Standard published on 14.1.2008
Selected format:Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Technical Specification Group working methods (3GPP TR 21.900 version 8.2.0 Release 8)
Standard published on 10.4.2008
Selected format:Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Technical Specification Group working methods (3GPP TR 21.900 version 8.3.0 Release 8)
Standard published on 14.1.2009
Selected format:Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Technical Specification Group working methods (3GPP TR 21.900 version 8.4.0 Release 8)
Standard published on 22.4.2010
Selected format:Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Technical Specification Group working methods (3GPP TR 21.900 version 9.0.0 Release 9)
Standard published on 21.1.2010
Selected format:Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Technical Specification Group working methods (3GPP TR 21.900 version 9.1.0 Release 9)
Standard published on 22.6.2011
Selected format:Universal Mobile Telecommunications System (UMTS); LTE; Evolution of 3GPP system (3GPP TR 21.902 version 10.0.0 Release 10)
Standard published on 29.4.2011
Selected format:Universal Mobile Telecommunications System (UMTS); Evolution of 3GPP system (3GPP TR 21.902 version 6.0.0 Release 6)
Standard published on 30.9.2003
Selected format:Universal Mobile Telecommunications System (UMTS); Evolution of 3GPP system (3GPP TR 21.902 version 7.0.0 Release 7)
Standard published on 30.6.2007
Selected format:Universal Mobile Telecommunications System (UMTS); LTE; Evolution of 3GPP system (3GPP TR 21.902 version 8.0.0 Release 8)
Standard published on 14.1.2009
Selected format:Latest update: 2026-06-28 (Number of items: 2 284 473)
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