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Content for  TS 44.021  Word version:  16.0.0

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1  ScopeWord‑p. 6

The present document defines the rate adaptation functions to be used in PLMN Mobile Stations (MS)s for adapting terminal interface data rates to the Mobile Station - Base Station System (MS-BSS) interface data rates in accordance with TS 43.010.
The provision of these functions will depend on the services a particular station is designed to support.

2  References, Definitions and Abbreviations

2.1  References

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
  • References are either specific (identified by date of publication, edition number, version number, etc.) or non specific.
  • For a specific reference, subsequent revisions do not apply.
  • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
TR 21.905: "Vocabulary for 3GPP specifications".
TS 22.034: "High Speed Circuit Switched Data (HSCSD) -Stage 1".
TS 43.010: "GSM Public Land Mobile Network (PLMN) connection types".
TS 23.034: "High Speed Circuit Switched Data (HSCSD) - Stage 2 Service Description".
TS 45.003: "Channel coding".
TS 27.001: "General on Terminal Adaptation Functions (TAF) for Mobile Stations (MS)".
TS 27.002: "Terminal Adaptation Functions (TAF) for services using asynchronous bearer capabilities".
[8]  Void.
TS 48.020: "Rate adaption on the Base Station System - Mobile-services Switching Centre (BSS - MSC) interface".
ITU-T Recommendation V.110: "Support of data terminal equipments (DTEs) with V-Series interfaces by an integrated services digital network".
ITU-T Recommendation X.30: "Support of X.21,X.21 bis and X.20 bis based terminal equipments (DTEs) by integrated services digital network (ISDN)".
TS 48.060: "Inband control of remote transcoders and rate adaptors for Enhanced Full Rate (EFR) and full rate traffic channels".

2.2  DefinitionsWord‑p. 7

For the purposes of the present document, the following terms and definitions apply.
Overall data stream:
The data stream in those parts of the network where the data flow is not split into multiple channels.
Stream of data with explicit or implicit numbering between splitter and combiner functions.
A physical full rate channel on the radio interface (TCH/F) independent of the contents
Multislot intermediate rate:
Intermediate rate per substream in those parts of the network where the overall data stream is split into substreams.
Intermediate rate:
Intermediate rate in the overall data stream.
Substream rate:
The user rate including padding, if applicable, on one individual substream
EDGE channel:
A general term referring to channels based on 8PSK modulation; i.e. TCH/F28.8, TCH/F32.0, and TCH/F43.2.

2.3  Abbreviations

Abbreviations used in the present document are listed in TR 21.905.

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