TR 21.905 – 3GPP Terminology and Definitions
3GPP TR 21.905 is the 3GPP Technical Report for 3GPP Terminology and Definitions. Its official 3GPP title is “Vocabulary for 3GPP Specifications”. It is published in 17 releases (R99 to Rel-19); the latest version is 19.2.0 in Rel-19.
Defines technical terms, abbreviations, and definitions for consistent use across 3GPP specifications.
Releases and versions of TR 21.905
| Release | Latest version | Links |
|---|---|---|
| Rel-19 | 19.2.0 | Read · Download (3GPP) |
| Rel-18 | 18.0.0 | Read · Download (3GPP) |
| Rel-17 | 17.2.0 | Read · Download (3GPP) |
| Rel-16 | 16.1.0 | Read · Download (3GPP) |
| Rel-15 | 15.2.0 | Read · Download (3GPP) |
| Rel-14 | 14.1.1 | Read · Download (3GPP) |
| Rel-13 | 13.1.0 | Read · Download (3GPP) |
| Rel-12 | 12.0.0 | Read · Download (3GPP) |
| Rel-11 | 11.3.0 | Read · Download (3GPP) |
| Rel-10 | 10.3.0 | Read · Download (3GPP) |
| Rel-9 | 9.4.0 | Read · Download (3GPP) |
| Rel-8 | 8.8.0 | Read · Download (3GPP) |
| Rel-7 | 7.4.0 | Read · Download (3GPP) |
| Rel-6 | 6.10.0 | Read · Download (3GPP) |
| Rel-5 | 5.10.0 | Read · Download (3GPP) |
| Rel-4 | 4.5.0 | Read · Download (3GPP) |
| R99 | 3.3.0 | Read · Download (3GPP) |
Scope of TR 21.905
Category: Services (Terminology). Technology generation: Multi-Gen. Network layer: Services.
Who should read this specification?
- Network operators
- Device manufacturers
- Regulators and standards bodies
- Researchers and academics
Implementation notes
Complexity level: Basic. Implementation difficulty: Low.
Key technologies
Specifications referenced by TR 21.905
Specifications that reference TR 21.905
- TS 23.501 5G System Architecture
- TS 23.502 5G System Procedures
- TS 33.501 5G Security Architecture
- TS 32.101 PLMN Management Principles and Requirements
- TS 24.229 IMS SIP/SDP Call Control Protocol
- TS 23.401 Evolved Packet System Architecture
- TS 36.331 E-UTRA Radio Resource Control (RRC) Protocol
- TS 23.228 IP Multimedia Core Network Subsystem
- TS 38.300 NR and NG-RAN Overall Description
- TS 23.060 GPRS Stage 2 Service Description
- TS 36.300 E-UTRAN Radio Interface Protocol Architecture
- TS 38.331 NR Radio Resource Control (RRC)
Other specifications in the 21 series
- TR 21.866 Study on Energy Efficiency in 3GPP Standards
- TR 21.900 3GPP Document Management Working Methods
- TR 21.902 3GPP Evolution Roadmap
- TR 21.904 3GPP UE Baseline Capabilities Requirements
- TR 21.910 Multi-mode UE Operation Principles
- TR 21.914 Summary of Rel-14 Work Items
- TR 21.915 Release 15 Description: Summary of Rel-15 Work Items
- TR 21.916 Rel-16 Description Summary
Frequently asked questions
What is 3GPP TR 21.905?
3GPP TR 21.905 is the 3GPP Technical Report for 3GPP Terminology and Definitions. Defines technical terms, abbreviations, and definitions for consistent use across 3GPP specifications.
Which 3GPP releases include TR 21.905?
TR 21.905 is published in 17 releases, from R99 to Rel-19. The latest version on 3GPP Explorer is 19.2.0 (Rel-19).
What category does TR 21.905 belong to?
TR 21.905 belongs to the Services (Terminology) category of 3GPP specifications. It applies to Multi-Gen networks.
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