Document History

1. ETSI TR 121 900

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   November 2020
   Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; 5G; Technical Specification Group working methods (3GPP TR 21.900 version 16.3.0 Release 16)

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2. ETSI TR 121 900

   April 2019
   Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Technical Specification Group working methods (3GPP TR 21.900 version 15.2.0 Release 15)

   • Historical Version

3. ETSI TR 121 900

   September 2018
   Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Technical Specification Group working methods (3GPP TR 21.900 version 14.2.0 Release 14)

   • Historical Version

4. ETSI TR 121 900

   July 2017
   Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Technical Specification Group working methods (3GPP TR 21.900 version 13.2.0 Release 13)

   • Historical Version

5. ETSI TR 121 900

   May 2017
   Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Technical Specification Group working methods (3GPP TR 21.900 version 14.0.0 Release 14)

   • Historical Version

6. ETSI TR 121 900

   April 2016
   Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Technical Specification Group working methods (3GPP TR 21.900 version 13.0.1 Release 13)

   • Historical Version

7. ETSI TR 121 900

   April 2016
   Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Technical Specification Group working methods (3GPP TR 21.900 version 12.1.0 Release 12)

   • Historical Version

8. ETSI TR 121 900

   April 2016
   Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Technical Specification Group working methods (3GPP TR 21.900 version 11.2.0 Release 11)

   • Historical Version

9. ETSI TR 121 900

   January 2012
   Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Technical Specification Group working methods (3GPP TR 21.900 version 10.1.0 Release 10)

   • Historical Version

10. ETSI TR 121 900

    June 2011
    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)

    • Historical Version

11. ETSI TR 121 900

    April 2010
    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)

    • Historical Version

12. ETSI TR 121 900

    October 2007
    Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Technical Specification Group working methods (3GPP TR 21.900 version 7.3.0 Release 7)

    • Historical Version

13. ETSI TR 121 900

    December 2004
    Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Technical Specification Group working methods (3GPP TR 21.900 version 6.4.0 Release 6)

    • Historical Version

14. ETSI TR 121 900

    December 2003
    Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Technical Specification Group working methods (3GPP TR 21.900 version 5.1.0 Release 5)

    • Historical Version

15. ETSI TR 121 900

    December 2003
    Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Technical Specification Group working methods (3GPP TR 21.900 version 4.1.0 Release 4)

    • Historical Version

16. ETSI TR 121 900

    December 2003
    Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Technical Specification Group working methods (3GPP TR 21.900 version 3.7.0 Release 1999)

    • Historical Version

17. ETSI TR 121 900

    March 2001
    Universal Mobile Telecommunications System (UMTS); Technical Specification Group working methods (3GPP TR 21.900 version 4.0.0 Release 4)

    • Historical Version

18. ETSI TR 121 900

    March 2001
    Universal Mobile Telecommunications System (UMTS); Technical Specification Group working methods (3GPP TR 21.900 version 3.6.0 Release 1999)

    • Historical Version

19. ETSI TR 121 900

    December 2000
    Universal Mobile Telecommunications System (UMTS); Working methods (3GPP TR 21.900 version 3.5.0 Release 1999)

    • Historical Version

20. ETSI TR 121 900

    September 2000
    Universal Mobile Telecommunications System (UMTS); Working Methods (3GPP TR 21.900 version 3.4.0 Release 1999)

    • Historical Version

21. ETSI TR 121 900

    June 2000
    Universal Mobile Telecommunications System (UMTS); Working methods (3G TR 21.900 version 3.3.0 Release 1999)

    • Historical Version

22. ETSI TR 121 900

    January 2000
    Universal Mobile Telecommunications System (UMTS); Working methods (3G TR 21.900 version 3.2.0 Release 1999)

    • Historical Version