1、 ETSI TS 101 270-2 V1.2.1 (2003-07)Technical Specification Transmission and Multiplexing (TM);Access transmission systems on metallic access cables;Very High Speed Digital Subscriber Line (VDSL);Part 2: Transceiver specificationETSI ETSI TS 101 270-2 V1.2.1 (2003-07) 2 Reference RTS/TM-06023 Keyword
2、s access, ATM, B-ISDN, IP, network, transmission, VDSL, XDSL 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 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Imp
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6、 copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2003. All rights reserved. DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of its Members. TIPHONTMand the TIPHON logo are Trade Marks curre
7、ntly being registered by ETSI for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. ETSI ETSI TS 101 270-2 V1.2.1 (2003-07) 3 Contents Intellectual Property Rights9 Foreword.9 1 Scope 9 2 References 10 3 Defi
8、nitions and abbreviations.10 3.1 Definitions10 3.2 Abbreviations .12 4 Reference models .14 4.1 Interface model.14 4.2 Protocol model .14 4.2.1 Protocol layer model.14 4.2.2 Functional decomposition.14 4.3 Reference points.15 4.3.1 V reference point 15 4.3.2 U reference points.15 4.3.3 S and T refer
9、ence points .15 4.4 Deployment configurations 15 5 Physical Medium Dependent (PMD) layer 17 5.1 Multi-carrier PMD sub-layer specification.17 5.1.1 PMD functional model17 5.1.2 VTU-O and VTU-R functional characteristics .18 5.1.2.1 Modulation18 5.1.2.1.1 Sub-carriers .18 5.1.2.1.2 Data sub-carriers18
10、 5.1.2.1.3 Modulation by the Inverse Discrete Fourier Transform (IDFT)18 5.1.2.2 Cyclic extension18 5.1.2.3 Synchronisation.19 5.1.2.3.1 Pilot tone19 5.1.2.3.2 Loop timing .20 5.1.2.3.3 Timing advance .20 5.1.2.3.4 Synchronous mode (optional)20 5.1.2.4 Power back-off in the upstream direction .20 5.
11、1.2.5 Constellation encoder20 5.1.2.5.1 Even values of b 21 5.1.2.5.2 Odd values of b, b = 1 or b = 321 5.1.2.5.3 Odd values of b, b 3 .22 5.1.2.6 Gain scaling.23 5.1.2.7 Tone ordering23 5.1.2.8 U1-interface characteristics .24 5.1.2.8.1 Egress 24 5.1.2.8.2 Power Spectral Density of all signals 24 5
12、.1.2.8.3 Wideband launch power 24 5.2 Single carrier PMD sub-layer specification24 5.2.1 Basic principles.24 5.2.1.1 Functional model.24 5.2.1.2 Timing.25 5.2.2 Transmit functionality.25 5.2.2.1 Frame splitting 25 5.2.2.2 Coding and modulation.27 5.2.2.2.1 Constellation encoder 27 5.2.2.2.2 Modulato
13、r 31 5.2.2.3 Carrier spectral shaping.32 5.2.3 Receive functionality 33 ETSI ETSI TS 101 270-2 V1.2.1 (2003-07) 4 5.2.4 Interface specification.34 5.2.4.1 I-interface34 5.2.4.2 U1-interface (Transmission Media Interface) .34 5.2.4.2.1 Transmit signal power .34 5.2.4.2.2 Transmit signal Power Spectra
14、l Density34 5.2.4.2.3 Transmit PSD control 34 5.2.4.2.4 Return Loss35 5.2.4.2.5 Output Signal Balance (OSB)35 5.2.5 Transmission profiles36 5.2.5.1 Transmission profile specification 36 5.2.5.1.1 Profile code36 5.2.5.1.2 Bit Rates 36 5.2.5.1.3 Spectral allocation of the Transmit Signal.37 5.2.5.2 St
15、andard Transmission Profiles.37 5.2.5.2.1 Standard Transmission Profiles - VDSL Band Allocation 38 5.2.5.2.2 Standard Transmission Profiles - Optional Regional Specific Band Allocation .39 6 Transmission Convergence (TC) layer.40 6.1 TC layer functionality 40 6.1.1 Generic functional model40 6.1.2 A
16、TM transport 42 6.1.2.1 Functional model of ATM transport .42 6.1.2.2 Transport of ATM data .42 6.1.3 STM transport.43 6.1.3.1 Functional model of STM transport 43 6.1.3.2 Transport of STM data43 6.1.4 Packets Transport Mode (PTM)44 6.1.4.1 Functional Model of PTM transport44 6.1.4.2 Transport of PT
17、M Data .44 6.1.5 Network timing reference transport 45 6.2 Transport Protocol Specific TC (TPS-TC) sub-layer .45 6.2.1 ATM Transport Protocol Specific TC (ATM_TC).45 6.2.1.1 Application interface description 45 6.2.1.1.1 Data flow .45 6.2.1.1.2 Synchronisation flow.46 6.2.1.1.3 Control flow 46 6.2.1
18、.1.4 OAM flow .47 6.2.1.2 ATM_TC functionality .47 6.2.1.2.1 Cell rate de-coupling .47 6.2.1.2.2 HEC generation and verification .47 6.2.1.2.3 Cell payload randomisation and de-randomisation .47 6.2.1.2.4 Cell delineation48 6.2.2 SDH Transport Protocol Specific TC (SDH_TC).48 6.2.2.1 Application int
19、erface description 48 6.2.2.1.1 Data flow .48 6.2.2.1.2 Synchronisation flow.48 6.2.2.1.3 OAM flow .48 6.2.2.2 SDH TPS-TC functionality .49 6.2.3 Overhead channel TPS-TC (OC_TC).49 6.2.3.1 Application interface description 49 6.2.3.1.1 Data flow .49 6.2.3.1.2 Synchronisation flow.49 6.2.3.2 Single C
20、arrier OC_TC functionality .49 6.2.3.2.1 VOC and eoc multiplexing50 6.2.3.2.2 De-multiplexing.50 6.2.4 PTM transport protocol specific TC (PTM-TC) .50 6.2.4.1 Application Interface Description .50 6.2.4.1.1 Data Flow 51 6.2.4.1.2 Synchronization Flow51 6.2.4.1.3 Control Flow51 6.2.4.1.4 OAM Flow 52
21、6.2.4.2 PTM TPS-TC Functionality52 ETSI ETSI TS 101 270-2 V1.2.1 (2003-07) 5 6.2.4.2.1 Packet encapsulation .52 6.2.4.2.2 Frame structure52 6.2.4.2.3 Octet transparency.53 6.2.4.2.4 Frame Check Sequence (FCS).54 6.2.4.2.5 Packet error monitoring.54 6.2.4.3 Data rate decoupling .55 6.2.4.4 Frame deli
22、neation55 6.3 Physical Medium-Specific TC (PMS-TC) sub-layer55 6.3.1 Functional model 55 6.3.2 Interface specification.56 6.3.2.1 () - Interface56 6.3.2.1.1 Data flow .56 6.3.2.1.2 Synchronisation flow.56 6.3.2.1.3 OAM flow .57 6.3.2.2 I-Interface57 6.3.2.2.1 Data flow .57 6.3.2.2.2 Synchronisation
23、flow.58 6.4 PMS-TC functions for multi-carrier modulation58 6.4.1 Scrambler59 6.4.2 Forward error correction.59 6.4.3 Interleaving.59 6.4.3.1 General59 6.4.3.2 Triangular implementation60 6.4.4 Framing.60 6.4.4.1 Frame description60 6.4.4.2 Payload adaptation 61 6.4.4.3 Reed-Solomon encoding .62 6.4
24、.4.4 Superframe description and contents of fast and slow octets.63 6.4.4.4.1 Cyclic redundancy check.63 6.4.4.4.2 Synchronisation octet 63 6.4.4.4.3 Indicator bits (IB) 64 6.4.4.4.4 Network Timing Reference (NTR)64 6.4.4.5 Convergence of fast and interleaved buffers.65 6.5 PMS-TC for single carrier
25、 modulation.65 6.5.1 Transmission frame format.65 6.5.1.1 Fast codeword structure 66 6.5.1.2 Slow codeword structure.66 6.5.1.3 Frame header octet definition67 6.5.1.3.1 Syncword octets.67 6.5.1.3.2 Control 1 octet .68 6.5.1.3.3 Control 2 octet .68 6.5.1.3.4 Control 3 octet .69 6.5.1.3.5 CRC-bits69
26、6.5.1.3.6 NTR transport and NTR marker generation 69 6.5.1.4 Frame transport classes .69 6.5.1.5 Frame delineation algorithm .70 6.5.2 Data randomisation and de-randomisation .70 6.5.3 Forward error correction.70 6.5.4 Interleaving.71 7 Operations and maintenance 72 7.1 OAM reference model72 7.1.1 O
27、AM framework 72 7.1.2 Components of the OAM framework .72 7.1.3 OAM functionality73 7.1.4 Fault and performance monitoring process.74 7.2 OAM entities 75 7.2.1 OAM functional model.75 7.2.2 OAM communication channels 76 7.2.2.1 Indicator Bits (IB) .77 7.2.2.2 VDSL Overhead Control (VOC).77 7.2.2.3 E
28、mbedded operation channel (eoc).77 ETSI ETSI TS 101 270-2 V1.2.1 (2003-07) 6 7.2.3 Partitioning of OAM data .78 7.3 OAM primitives and parameters 78 7.3.1 Line-related primitives78 7.3.1.1 Near-end anomalies.79 7.3.1.2 Far-end anomalies .79 7.3.1.3 Near-end defects .79 7.3.1.4 Far-end defects79 7.3.
29、1.5 Near-end failures.80 7.3.1.6 Far-end failures .80 7.3.2 Path-related primitives80 7.3.2.1 Anomalies, defects and failures for ATM transport80 7.3.2.1.1 Near-end anomalies .81 7.3.2.1.2 Far-end anomalies .81 7.3.2.1.3 Near-end defects81 7.3.2.1.4 Far-end defects 81 7.3.2.1.5 Near-end failures .81
30、 7.3.2.1.6 Far-end failures82 7.3.2.2 Anomalies, defects and failures for STM transport.82 7.3.3 Power-related primitives.82 7.3.3.1 Near-end primitives.82 7.3.3.2 Far-end primitives .82 7.3.4 Far-end indicators .83 7.3.5 Performance parameters .83 7.3.5.1 Defect and failure counters .83 7.3.5.2 Lin
31、e-related performance parameters83 7.3.5.3 Path-related performance parameters83 7.3.5.3.1 ATM path-related performance parameters.84 7.3.5.3.2 SDH path-related performance parameters84 7.3.6 Test parameters.84 7.3.6.1 Near-end test parameters.84 7.3.6.2 Far-end test parameters .84 7.3.6.3 Self-test
32、 results84 7.4 Multi-carrier VDSL overhead channel (VOC).84 7.4.1 VOC bandwidth84 7.4.2 VOC protocol85 7.4.3 High-level on-line adaptation .85 7.4.3.1 Bit-swapping .85 7.4.3.2 Bit-swap channel.85 7.4.3.3 Bit-swap co-ordination85 7.4.3.4 Bit-swap request85 7.4.3.5 Bit-swap acknowledge 86 7.4.3.6 Bit-
33、swap - Receiver.86 7.4.3.7 Bit-swap - Transmitter 87 7.4.3.8 Express swapping87 7.4.3.9 Express swap request 87 7.4.4 Dynamic rate adaptation .88 7.5 Single carrier VDSL overhead control (VOC) channel88 7.5.1 VOC message types88 7.5.2 VOC message transport 88 7.5.2.1 VOC handshake 89 7.5.2.2 VOC han
34、dshake flow charts89 7.5.2.3 Multiple word communication91 7.5.3 VOC message set91 7.5.3.1 Status messages.91 7.5.3.2 Performance-monitoring messages .92 7.5.3.3 Configuration messages 93 7.5.3.3.1 Parameter setting messages .94 7.5.3.3.2 Trigger messages .96 7.5.3.4 Control messages 97 7.6 VDSL emb
35、edded operations channel (eoc) 98 7.6.1 eoc functional model.99 7.6.2 VME functionality 99 ETSI ETSI TS 101 270-2 V1.2.1 (2003-07) 7 7.6.3 eoc protocol format.100 7.6.3.1 External message format .100 7.6.3.2 Internal message format 100 7.6.3.3 eoc organisation and message types100 7.6.3.3.1 eoc mess
36、age structure 101 7.6.3.3.2 eoc Message Set 102 7.6.3.3.3 Bi-directional eoc messages 103 7.6.3.3.4 Downstream messages.103 7.6.3.3.5 Upstream messages .104 7.6.3.4 VTU-R Data Registers 104 7.6.3.5 eoc protocol states.105 7.6.3.5.1 Message/echo-response protocol state (idle state).105 7.6.3.5.2 Mess
37、age/unable-to-comply response protocol state (UTC state) 105 7.6.3.5.3 Message/data-response protocol state105 7.7 Single carrier specific OAM objects 106 7.7.1 Line related primitives 106 7.7.1.1 Near-end defects .106 7.7.1.2 Far-end defects106 7.7.2 VTU-R configuration register.107 7.7.3 VTU-R per
38、formance registers.108 7.7.4 VTU transmit filter register 108 8 Link activation and de-activation.109 8.1 Link state and timing diagram109 8.1.1 Overview 109 8.1.2 Activation procedures.109 8.1.2.1 Cold start.109 8.1.2.3 Warm start.110 8.1.2.4 Resume on error110 8.1.2.5 Warm resume 110 8.1.3 Steady-
39、state transmission110 8.1.4 De-activation procedures 110 8.1.4.1 Introduction.110 8.1.4.2 Void.110 8.1.4.3 Power-down procedure .110 8.1.4.4 Hot resume procedure .110 8.1.5 De-activated power-saving state.111 8.1.6 Power-down state111 8.1.7 Dynamic power-save state 111 8.2 Multi-carrier activation/d
40、e-activation.111 8.2.1 Overview 111 8.2.2 SOC protocol 112 8.2.2.1 Message Format 112 8.2.2.2 O/R IDLE112 8.2.2.3 O/R REPEAT_REQUEST 112 8.2.2.4 Message codes.113 8.2.2.5 Message fields.113 8.2.2.6 Segmentation of messages 113 8.2.3 Handshake procedure114 8.2.3.1 Message coding format .114 8.2.3.1.1
41、 Identification field (I) 114 8.2.3.1.2 Standard information field (S).115 8.2.3.2 Handshake procedures and Message field settings .116 8.2.3.2.1 Handshake - VTU-O116 8.2.3.2.2 Handshake - VTU-R117 8.2.4 Training state 120 8.2.4.1 Sequence of messages and symbols during training. 120 8.2.4.2 Message
42、s and symbols sent by the VTU-O.121 8.2.4.2.1 SOC messages .121 8.2.4.2.2 Symbol types transmitted by the VTU-O 123 8.2.4.3 Messages and symbols sent by the VTU-R.124 8.2.4.3.1 SOC messages .124 ETSI ETSI TS 101 270-2 V1.2.1 (2003-07) 8 8.2.4.3.2 Symbol types transmitted by the VTU-R 125 8.2.5 Echo
43、canceller training state (optional) 126 8.2.6 Channel analysis and exchange 127 8.2.6.1 Sequence of messages and symbols during channel analysis and exchange.127 8.2.6.2 Messages and symbols send by the VTU-O128 8.2.6.2.1 SOC messages .128 8.2.6.2.2 Symbol types transmitted by the VTU-O 131 8.2.6.3
44、Messages and symbols sent by the VTU-R.131 8.2.6.3.1 SOC messages .131 8.2.6.3.2 Symbol types transmitted by the VTU-R 134 8.3 Single carrier activation/deactivation .135 8.3.1 Link states and timing.135 8.3.1.1 States .135 8.3.1.2 Activation136 8.3.1.3 De-activation.136 8.3.2 Set of transmission pa
45、rameters .137 8.3.2.1 Current STP.137 8.3.2.2 Standard STPs.137 8.3.3 Transmission parameters modification .138 8.3.3.1 Adjustment of standard STP values 138 8.3.3.2 CR_STP adjustment138 8.3.3.3 STP adjustment summary .139 8.3.4 VTU activation/deactivation.140 8.3.5 Control signals 140 8.3.6 Flags a
46、nd indicators 141 8.3.7 Transmit signals141 8.3.8 Timers.142 8.3.9 VTU-O state machine .143 8.3.10 VTU-R state machine .146 8.3.11 Two-step activation.149 Annex A (informative): UTOPIA Implementation of the ATM-TC Interface .150 Annex B (informative): TC Example Algorithms .152 B.1 Frame Delineation
47、 Algorithm 152 B.2 Convolutional Interleaver.152 B.2.1 Implementation Example .152 B.2.2 Interleaving Parameters - Example 153 Annex C (informative): Provisional handshake parameters 154 Annex D (informative): MCM Duplexing 155 D.1 Introduction 155 D.2 MCM duplexing technique.155 D.2.1 Cyclic Suffix
48、 (CS)155 D.2.2 Timing Advance (TA) 156 D.3 Synchronous versus asynchronous operation.156 Annex E (informative): Bibliography.157 History 158 ETSI ETSI TS 101 270-2 V1.2.1 (2003-07) 9 Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared t
49、o ETSI. The information pertaining to these 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 updates are available on the ETSI Web server (http:/webapp.etsi.org/IPR/home.asp). 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 othe
