1、 ETSI TS 128 062 V14.0.0 (2017-04) Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Inband Tandem Free Operation (TFO) of speech codecs; Service description; Stage 3 (3GPP TS 28.062 version 14.0.0 Release 14) floppy3TECHNICAL SPECIFICATI
2、ON GLOBAL SYSTEM FOR MOBILE COMMUNICATIONSRETSI ETSI TS 128 062 V14.0.0 (2017-04)13GPP TS 28.062 version 14.0.0 Release 14Reference RTS/TSGS-0428062ve00 Keywords GSM,UMTS ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 62
3、3 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice The present document can be downloaded from: http:/www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content
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9、re Trade Marks registered and owned by the GSM Association. ETSI ETSI TS 128 062 V14.0.0 (2017-04)23GPP TS 28.062 version 14.0.0 Release 14Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these
10、essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest up
11、dates are available on the ETSI Web server (https:/ipr.etsi.org/). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web se
12、rver) which are, or may be, or may become, essential to the present document. Foreword This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identi
13、ties or GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under http:/webapp.etsi.org/key/queryform.asp. Modal verbs terminology In the present document “shall“, “shall
14、not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct c
15、itation. ETSI ETSI TS 128 062 V14.0.0 (2017-04)33GPP TS 28.062 version 14.0.0 Release 14Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 10g31 Scope 11g32 References 11g33 Definitions and abbreviations . 12g33.1 Definitions 12g33.2 Abbreviations . 13g34 Ge
16、neral Description 15g34.1 Background Information 15g34.2 Principle of TFO Operation 16g34.2.1 Principle for TFO Operation for Narrow-Band speech codec types . 16g34.2.2 Principle for TFO Operation for Wide-Band speech codec types (i.e. AMR-WB) 19g34.3 TFO Standard Version Handling 20g34.4 Document C
17、ontent 21g35 TFO Frame Structure 22g35.1 General . 22g35.2 TFO Frames for 16 kbit/s sub-multiplexing . 22g35.2.1 TFO Frames for GSM Full Rate and GSM Enhanced Full Rate 22g35.2.2 TFO Frames for the Adaptive Multi Rate Family . 23g35.2.2.1 TFO Frame Format AMR_TFO_16k 23g35.2.2.2 TFO Frame Format AMR
18、_TFO_8+8k 26g35.2.2.3 TFO Frame Format AMR_WB_TFO_16k and AMR_WB_TFO_32k . 28g35.2.3 Transmission of the bits of 16 kbit/s TFO Frames 30g35.2.3a Transmission of the bits of 32 kbit/s TFO Frames 30g35.2.4 Transmission of the bits of AMR_TFO_8+8k Frames . 31g35.2.5 Optional AMR_TRAU_8+8k Frames . 31g3
19、5.3 TFO Frames for 8 kbit/s sub-multiplexing . 32g35.3.1 TFO Frame for the GSM Half Rate 32g35.3.2 Transmission of the bits of 8 kbit/s TFO frames. 32g35.4 Void 33g35.5 Determination of the TFO Frame format . 33g35.6 Codec Types in TFO Frames 33g36 Elementary Procedures for TFO Operation 33g36.1 Pre
20、-synchronisation of IPEs . 33g36.2 TFO Negotiation 34g36.3 Codec Mismatch Resolution. 34g36.4 TFO Establishment . 35g36.5 Codec Optimisation 35g36.6 TFO Termination 36g36.7 TFO Fast Establishment after Local Handover 36g37 TFO Messages 37g37.1 Extendibility . 39g37.2 Regular and Embedded TFO Message
21、s 39g37.3 Cyclic Redundancy Check . 39g37.4 TFO_REQ Messages 40g37.4.1 Definition of the SIG_LUC Extension_Block 41g37.4.2 Definition of the Codec_x Extension_Block 41g37.4.3 Definition of the Codec_List_Extension_Block . 42g37.4.4 Definition of the Codec_Attribute_Head Extension_Block 42g37.4.5 Def
22、inition of the TFO_Version Extension_Block 43g3ETSI ETSI TS 128 062 V14.0.0 (2017-04)43GPP TS 28.062 version 14.0.0 Release 147.4.5.1 Selector for Alternative Codecs 43g37.5 TFO_ACK Messages . 44g37.6 TFO_TRANS Messages . 44g37.7 TFO_NORMAL Message 44g37.8 TFO_FILL Message . 45g37.9 TFO_DUP Message
23、. 45g37.10 TFO_SYL Message 45g37.11 Specification of the TFO Messages 45g37.11.1 Codec_Types 45g37.11.2 Codec_List 45g37.11.3 Codec_Type Attributes . 45g37.11.3.1 AMR Codec_Type Attributes . 46g37.11.3.1.1 AMR Active_Codec_Set Attributes 47g37.11.3.1.2 AMR Supported_Codec_Set Attributes 47g37.11.3.1
24、.3 AMR specific Codec_Attribute_Head Extension_Block 48g37.11.3.1.4 AMR-WB specific Codec_Attribute_Head Extension_Block . 50g38 Time Alignment of TFO Frames and TFO Messages 51g38.1 Alignment of TFO Frames and TFO Messages for GSM 51g38.1.1 Time Alignment of TFO Messages in GSM . 51g38.1.2 Time Ali
25、gnment of TFO Frames to Uplink TRAU Frames 51g38.1.3 Time Alignment of TFO Frames to Downlink TRAU Frames . 52g38.2 Time Alignment of TFO Frames and TFO Messages for 3G . 53g38.2.1 Time Alignment of TFO Messages in 3G . 53g38.2.2 Time Alignment of TFO Frames to Uplink Iu Frames . 54g38.2.3 Time Alig
26、nment of TFO Frames to Downlink Iu Frames 54g39 TFO State Machine 55g39.1 Initialisation 56g39.1.1 Not_Active State . 56g39.1.2 Wakeup State 56g39.2 Establishment . 56g39.2.1 First_Try State 56g39.2.2 Continuous_Retry State 57g39.2.3 Periodic_Retry State . 57g39.2.4 Monitor State 57g39.2.5 Mismatch
27、State . 57g39.3 Contact State 57g39.4 Preparation . 58g39.4.1 Wait_RC State 58g39.4.2 Konnect State 58g39.5 Operation State . 58g39.6 Local Handover 58g39.6.1 Fast_Try State. 58g39.6.2 Fast_Contact State 58g39.7 Distant Handover, TFO Interruption 58g39.7.1 Sync_Lost State 58g39.7.2 Re_Konnect State
28、. 59g39.7.3 TFO_Term 59g39.8 Failure State 59g310 Detailed Description of the TFO Protocol 59g310.1 Syntax Used for the TFO_Protocol Description . 59g310.2 Detailed Description of the Conditions 59g310.2.1 Conditions for TFO_REQ, TFO_ACK, TFO_REQ_L, TFO_ACK_L, New_Local_Codec, New_Local_Config, Dist
29、ant Config . 60g310.2.2 Conditions for TFO_Frame 60g310.3 Abbreviations, Definitions, Notations used in the TFO_Protocol Description 61g310.4 Detailed Description of the Events . 63g310.5 Actions Table . 66g310.6 Protocol Tables . 69g311 TFO Decision Algorithm 84g3ETSI ETSI TS 128 062 V14.0.0 (2017-
30、04)53GPP TS 28.062 version 14.0.0 Release 1411.1 Main TFO Decision Procedure . 85g311.2 TFO Decision Algorithm for AMR codec types 85g311.2.1 Principles 85g311.2.2 Available Information at Call Set-up 86g311.2.4 Flowchart for AMR-NB TFO Decision 87g311.2.5 Annotations to the Flowcharts 89g311.3 Imme
31、diate TFO Establishment . 89g311.4 FR HR Optimisation (only for AMR-NB) 90g311.5 Codec Mode Optimisation 90g311.6 Codec Type Optimisation and Codec Mismatch Resolution 90g311.6.1 Procedure 90g311.6.2 Preference List of TFO candidates . 91g311.7 Immediate Codec Type Optimisation . 92g311.8 TFO Decisi
32、on Table for AMR-WB 92g312 Determination of the OACS for AMR-NB 93g312.1 Principles 93g312.2 Algorithm for OACS Determination 93g312.2.1 Case 1: No side supports ACS change 93g312.2.2 Case 2: Only one side supports ACS change 95g312.2.3 Case 3: Both sides support ACS change . 95g312.3 OACS Selection
33、 Rules . 96g312.3.1 Case 1: No Half Rate Channel is involved . 96g312.3.2 Case 2: A Half Rate Channel is involved . 97g312.4 Rules for Contiguous Subset Selection 97g312.5 Acceptability Rule for the OACS . 97g312.6 FR HR Matching 97g312.7 Contiguity Rule 98g312.8 Examples of OACS Computation 98g312.
34、8.1 TFO between a full rate channel and a half rate channel 98g312.8.2 TFO between two full rate channels with different ACS 98g312.8.3 Full Rate Channel with restricted capabilities 99g312.8.4 Scenario: Full Rate Channel with MACS = 2 . 99g312.8.5 Scenario: AMR codec type with only one supported mo
35、de 99g3Annex A (normative): In-band Signalling Protocol: Generic Structure . 100g3A.0 Scope of Annex A and Annex B 100g3A.1 Generic Structure of Inband Signalling Messages . 100g3A.1.1 Frequency and Order of Bit Transmission . 100g3A.1.2 IS_Header . 101g3A.1.3 IS_Command_Block 101g3A.1.4 IS_Extensio
36、n_Block(s) . 102g3A.2 Detailed Specification of IS Messages . 102g3A.2.1 IS_REQ Message . 102g3A.2.2 IS_ACK Message . 103g3A.2.3 IS_IPE, IS_TRANS and IS_NORMAL Messages . 103g3A.2.4 IS_FILL Message . 105g3A.2.5 IS_DUP Message 105g3A.2.6 IS_SYL Message 105g3A.3 Keep_Open_Indication . 105g3A.4 Rules f
37、or Sending of IS Messages 106g3A.5 System Identification and IS_System_Identification_Block 107g3Annex B (informative): In Path Equipment: Generic Rules and Guidelines 109g3B.1 Types of In Path Equipment . 109g3B.2 IS_Compliant IPEs . 109g3B.2.1 Typical IPEs are IS_Passive . 109g3B.2.2 IS Message_Tr
38、ansparency 110g3B.2.2.1 First IS Message . 110g3ETSI ETSI TS 128 062 V14.0.0 (2017-04)63GPP TS 28.062 version 14.0.0 Release 14B.2.2.2 IS Messages within a Sequence 110g3B.2.2.3 Isolated IS Message 111g3B.2.2.4 Check if IS Message is following . 111g3B.3 IPE State Representation 111g3B.3.1 IPE in Sy
39、nc_Not_Found . 113g3B.3.2 IPE in Sync_Found . 113g3B.3.3 IPE in Sync_Lost 113g3B.3.4 IPE in Keep_Open_Sync 114g3B.3.5 IPE in Keep_Open_Lost . 114g3B.4 IPE Error Handling . 114g3B.5 IPE Transmission Delay . 114g3B.5.1 IPE Transmission Delay in Normal_Mode 115g3B.5.2 IPE Transmission Delay in Transpar
40、ent_Mode 115g3B.6 Compliance to IS Messages . 115g3B.6.1 Compliance to IS_REQ and IS_ACK Messages 115g3B.6.2 Compliance to IS_NORMAL Message 115g3B.6.3 Compliance to IS_TRANS_x Messages . 116g3B.6.4 Compliance to IS_TRANS_x_u Messages . 116g3B.6.5 Compliance to IS_FILL Message . 116g3B.6.6 Complianc
41、e to IS_DUP Messages 117g3B.6.7 Compliance to IS_SYL Messages 117g3Annex C (normative): Tandem Free Operation in GSM, including AMR-WB . 118g3C.1 Scope 118g3C.2 Overview 118g3C.2.1 TFO_TRAU . 119g3C.2.2 TFO_BSC . 119g3C.2.3 TFO_BTS . 120g3C.2.4 Modifications of the Codec Type and/or the Codec Config
42、uration 121g3C.3 TFO_TRAU . 122g3C.3.1 Rx_TRAU Process . 123g3C.3.2 Tx_TRAU Process . 123g3C.3.2.1 Downlink Speech Transmission and DTX handling if TFO is ON 124g3C.3.2.1.1 GSM_FR, GSM_EFR and GSM_HR cases 125g3C.3.2.1.2 AMR and AMR-WB cases 125g3C.3.2.2 Synchronisation and Bit Errors in Received TF
43、O Frames 126g3C.3.2.2.1 GSM_FR, GSM_EFR and GSM_HR cases 126g3C.3.2.2.2 AMR and AMR-WB cases 126g3C.3.2.2.2.1 No format conversion 126g3C.3.2.2.2.2 With format conversion . 126g3C.3.2.3 Maximum Rate Control 126g3C.3.3 Tx_TFO Process . 127g3C.3.3.1 Maximum Rate Control 128g3C.3.3.2 Codec Modes outsid
44、e the allowed Range . 128g3C.3.4 Rx_TFO Process 128g3C.3.4.1 Search for and Monitoring of TFO Synchronization 128g3C.3.4.2 Errors in TFO Messages and TFO Frames . 129g3C.3.5 TFO_Protocol Process 131g3C.3.5.1 Messages from Rx_TRAU or local BSS. 131g3C.3.5.2 Messages to Tx_TRAU 131g3C.3.5.3 Optional M
45、essages to the local BSC . 132g3C.3.5.4 Messages to Tx_TFO 132g3C.3.5.5 Messages from Rx_TFO . 132g3C.4 TFO_BTS . 133g3C.4.1 TFO_States and Transitions . 133g3C.4.2 Handling of downlink DTX in TFO . 135g3C.4.3 Handling of Errors in Configuration Parameters 135g3ETSI ETSI TS 128 062 V14.0.0 (2017-04)
46、73GPP TS 28.062 version 14.0.0 Release 14C.4.4 Procedures for Round Trip Delay Measurements 135g3C.5 TFO_BSC . 135g3C.5.1 Resolution of Codec Type Mismatch and Codec Type Optimization 135g3C.5.2 Role of the BSC for AMR and AMR-WB TFO . 136g3C.5.2.1 Configuration of the AMR and AMR-WB speech service.
47、 136g3C.5.2.2 Determination and Establishment of the Common ACS 136g3C.5.2.3 Handovers and the AMR TFO 137g3C.6 The Dialogue between TFO_TRAU and TFO_BTS 137g3C.6.1 Configuration Parameters in AMR-NB TRAU/TFO frames 137g3C.6.1.1 Configuration Protocol Format . 137g3C.6.1.2 Config_Prot field 138g3C.6
48、.1.3 Message_No Field 138g3C.6.1.4 Configuration Parameters Fields . 138g3C.6.1.5 Mapping of the Configuration Parameters on 16 and 8 kbit/s TRAU/TFO frames for AMR Configuration 140g3C.6.2 TFO and Handover Status of the Connection . 141g3C.6.2.1 TFO Status Messages 141g3C.6.2.2 Notification of Stat
49、us of Connection 141g3C.7 The Dialogue between TFO_BTS and TFO_BSC . 142g3C.7.1 BSC to BTS messages 142g3C.7.2 BTS to BSC messages 142g3C.8 Configuration Parameter Exchange on Abis/Ater and A Interfaces for AMR and AMR-WB 143g3C.8.1 Protocol for the Exchange of Configuration Parameters 143g3C.8.2 Initial Configuration at Resource Allocation 144g3C.8.3 Distant Configuration before TFO is established . 144g3C.8.4 Optimal TFO configuration 144g3C.8.5 Configuration Exchange in TFO 144g3C.8.6 Handover_Complete Notification in TFO 145g3C.9 Location of the TFO Decision Algo
