Table of Contents

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Foreword
1 Scope
2 References, abbreviations and definitions
3 General approach
4 The RA0 Function
5 The RA1 Function
6 The RA1' Function
7 Split/Combine and Padding Functions
   7.1 Data Frame distribution into the channels by the
        Split/Combine function
   7.2 Substream numbering
   7.3 Initial Substream Synchronisation for
        Transparent Services
   7.4 Frame Synchronisation and Action on loss of
        Synchronisation
   7.5 Network Independent Clocking
   7.6 Padding
8 The EDGE Multiplexing Function
9 The RA1/RA1' Function
   9.1 Radio Interface rate of 12 kbit/s
   9.2 Radio Interface rate of 6 kbit/s
   9.3 Radio Interface rate of 3,6 kbit/s
   9.4 Synchronisation
   9.5 Idle frames
10 THE RA1'/RAA' FUNCTION
   10.1 Radio Interface rate of 14,5 kbit/s
   10.2 Synchronisation
   10.3 Idle frames
11 THE RAA' FUNCTION
   11.1 Coding of A-TRAU frame
   11.2 Framing Pattern Substitution in A-TRAU frame
   11.3 A-TRAU Synchronisation Pattern
12 THE RAA' FUNCTION
13 The RA2 Function
14 The A-interface Multiplexing Function
15 Support of non-transparent bearer services
   15.1 TCH/F9.6 and TCH/F4.8 kbit/s channel codings
   15.2 TCH/F14.4, TCH/F28.8, and TCH/F43.2 channel
        codings
16 Support of transparent bearer services
   16.1 TCH/F9.6 and TCH/F4.8 channel codings
   16.2 TCH/F14.4, TCH/F28.8, and TCH/F32.0 channel
        codings
17 Frame Formats
Annex A (informative): Frame Pattern Substitution
      A.1 Special cases
      A.2 False Z sequence detection
Annex B (informative): Change History

Abstract

Defines rate adaptation functions to be used in GSM PLMN Base Station Systems (BSS) transcoders and IWF for adapting radio interface data rates to the 64 kbit/s used at the A-interface in accordance with GSM 03.10. The number of Base Station System - Mobile -services Switching Centre (BSS - MSC) traffic channels supporting data rate adaptation may be limited. In this case some channels may not support data rate adaptation.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	3GPP CN