TS 25.221 – UTRA TDD Physical Layer Specification
3GPP TS 25.221 is the 3GPP Technical Specification for UTRA TDD Physical Layer Specification. It is published in 17 releases (R99 to Rel-19); the latest version is 19.0.0 in Rel-19.
Describes physical channels & transport-to-physical channel mapping for UTRA TDD mode.
Releases and versions of TS 25.221
| Release | Latest version | Links |
|---|---|---|
| Rel-19 | 19.0.0 | Read · Download (3GPP) |
| Rel-18 | 18.0.0 | Read · Download (3GPP) |
| Rel-17 | 17.0.0 | Read · Download (3GPP) |
| Rel-16 | 16.0.0 | Read · Download (3GPP) |
| Rel-15 | 15.0.0 | Read · Download (3GPP) |
| Rel-14 | 14.0.0 | Read · Download (3GPP) |
| Rel-13 | 13.0.0 | Read · Download (3GPP) |
| Rel-12 | 12.0.0 | Read · Download (3GPP) |
| Rel-11 | 11.0.0 | Read · Download (3GPP) |
| Rel-10 | 10.2.0 | Read · Download (3GPP) |
| Rel-9 | 9.4.0 | Read · Download (3GPP) |
| Rel-8 | 8.11.0 | Read · Download (3GPP) |
| Rel-7 | 7.12.0 | Read · Download (3GPP) |
| Rel-6 | 6.6.0 | Read · Download (3GPP) |
| Rel-5 | 5.7.0 | Read · Download (3GPP) |
| Rel-4 | 4.8.0 | Read · Download (3GPP) |
| R99 | 3.11.0 | Read · Download (3GPP) |
Scope of TS 25.221
Category: Radio Access (Physical Layer). Technology generation: 3G. Network layer: RAN.
Who should read this specification?
- Network operators
- Device manufacturers
- Researchers and academics
Implementation notes
Complexity level: Advanced. Implementation difficulty: High.
Key technologies
Specifications referenced by TS 25.221
- TS 25.225 UTRA TDD Physical Layer Measurements
- TS 25.301 UE-UTRAN Radio Interface Protocol Architecture
- TS 25.302 UTRA Physical Layer Services
- TS 25.401 UTRAN Overall Architecture
- TS 25.402 UTRAN Synchronisation Mechanisms
- TS 25.304 UE Idle Mode Procedures
- TS 25.427 UTRAN Iub/Iur User Plane Protocols
- TS 25.435 UTRAN Iub Interface User Plane Protocols
- TS 25.201 UTRA Physical Layer General Description
- TS 25.211 UTRA FDD Layer 1: Transport & Physical Channels
- TS 25.212 UTRA FDD Layer 1 Multiplexing & Channel Coding
- TS 25.213 UTRA FDD Spreading and Modulation
Specifications that reference TS 25.221
- TS 25.331 RRC Protocol for UE-UTRAN Radio Interface
- TS 25.304 UE Idle Mode Procedures
- TS 25.215 UTRA FDD Measurement Definitions
- TS 25.224 UTRA TDD Physical Layer Procedures
- TS 25.212 UTRA FDD Layer 1 Multiplexing & Channel Coding
- TS 25.225 UTRA TDD Physical Layer Measurements
- TS 25.211 UTRA FDD Layer 1: Transport & Physical Channels
- TS 25.302 UTRA Physical Layer Services
- TS 25.346 MBMS in UTRA Technical Specification
- TS 25.222 UTRA TDD Multiplexing & Channel Coding
- TS 25.433 Node B Application Part (NBAP) Protocol
- TS 25.223 UTRA Physical Layer TDD Spreading & Modulation
Other specifications in the 25 series
- TS 25.212 UTRA FDD Layer 1 Multiplexing & Channel Coding
- TS 25.213 UTRA FDD Spreading and Modulation
- TS 25.214 UTRA FDD Physical Layer Procedures
- TS 25.215 UTRA FDD Measurement Definitions
- TS 25.222 UTRA TDD Multiplexing & Channel Coding
- TS 25.223 UTRA Physical Layer TDD Spreading & Modulation
- TS 25.224 UTRA TDD Physical Layer Procedures
- TS 25.225 UTRA TDD Physical Layer Measurements
Related glossary terms
Related topics
Frequently asked questions
What is 3GPP TS 25.221?
3GPP TS 25.221 is the 3GPP Technical Specification for UTRA TDD Physical Layer Specification. Describes physical channels & transport-to-physical channel mapping for UTRA TDD mode.
Which 3GPP releases include TS 25.221?
TS 25.221 is published in 17 releases, from R99 to Rel-19. The latest version on 3GPP Explorer is 19.0.0 (Rel-19).
What category does TS 25.221 belong to?
TS 25.221 belongs to the Radio Access (Physical Layer) category of 3GPP specifications. It applies to 3G networks.
View the full specification with interactive table of contents, version history, and AI analysis.
Read Full Specification →