TS 04.21 – GSM Rate Adaptation Functions
3GPP TS 04.21 is the 3GPP Technical Specification for GSM Rate Adaptation Functions. It is published in 5 releases (Ph1 to R98); the latest version is 7.1.0 in R98.
Defines rate adaptation functions for GSM PLMN Mobile Stations to adapt terminal interface data rates to MS-BSS interface data rates.
Releases and versions of TS 04.21
| Release | Latest version | Links |
|---|---|---|
| R98 | 7.1.0 | Read · Download (3GPP) |
| R97 | 6.1.0 | Read · Download (3GPP) |
| R96 | 5.7.0 | Read · Download (3GPP) |
| Ph2 | 4.6.1 | Read · Download (3GPP) |
| Ph1 | 3.1.0 | Read · Download (3GPP) |
Scope of TS 04.21
Category: Services (Data Services). Technology generation: 2G. Network layer: RAN.
Who should read this specification?
- Network operators
- Device manufacturers
- Regulators and standards bodies
Implementation notes
Complexity level: Intermediate. Implementation difficulty: Medium.
Key technologies
Other specifications in the 04 series
- TS 04.11 SMS Support Procedures for GSM and GPRS
- TS 04.12 SMS Cell Broadcast Interface Specification
- TS 04.13 Mobile Station Performance Requirements
- TS 04.14 Mobile Station Conformance Testing Specification
- TS 04.22 Radio Link Protocol for GSM Data Transmission
- TS 04.30 Location Services Operations Stage 3
- TS 04.31 Radio Resource LCS Protocol (RRLP) Definition
- TS 04.35 MS Based Location Service Interface Messages
Related glossary terms
Frequently asked questions
What is 3GPP TS 04.21?
3GPP TS 04.21 is the 3GPP Technical Specification for GSM Rate Adaptation Functions. Defines rate adaptation functions for GSM PLMN Mobile Stations to adapt terminal interface data rates to MS-BSS interface data rates.
Which 3GPP releases include TS 04.21?
TS 04.21 is published in 5 releases, from Ph1 to R98. The latest version on 3GPP Explorer is 7.1.0 (R98).
What category does TS 04.21 belong to?
TS 04.21 belongs to the Services (Data Services) category of 3GPP specifications. It applies to 2G networks.
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