1、 ETSI TS 101 270-1 V1.4.1 (2005-10)Technical Specification Transmission and Multiplexing (TM);Access transmission systems on metallic access cables;Very high speed Digital Subscriber Line (VDSL);Part 1: Functional requirementsETSI ETSI TS 101 270-1 V1.4.1 (2005-10) 2 Reference RTS/TM-06039 Keywords
2、access, ATM, B-ISDN, functional, IP, 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 Im
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4、the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. In
5、formation on the current status of this and other ETSI documents is available at http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http:/portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No
6、 part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2005. All rights reserved. DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the be
7、nefit of its Members. TIPHONTMand the TIPHON logo are Trade Marks currently 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 101 270-1 V1.4.1 (2005-10) 3 Contents In
8、tellectual Property Rights6 Foreword.6 1 Scope 7 2 References 8 3 Definitions, symbols and abbreviations .9 3.1 Definitions9 3.2 Symbols10 3.3 Abbreviations .10 4 Reference configuration and description11 4.1 General .11 4.2 Functional decomposition 14 4.2.1 The and interfaces 14 4.2.2 Elemental inf
9、ormation flows across the and interfaces15 4.2.2.1 Data flow.15 4.2.2.2 Synchronization flow 15 4.2.2.3 Link Control flow16 4.2.2.4 Link Performance and Path Characterization flow .16 5 Operations Administration and Maintenance (OAM)16 5.1 VDSL Link Control16 5.2 Embedded Operations Channel (EOC).16
10、 6 ElectroMagnetic Compatibility 17 7 Climatic requirements 17 8 Transceiver specific requirements17 8.1 Transceiver interface 17 8.1.1 Impedance.18 8.1.2 Return loss 18 8.1.3 Balance about earth.18 8.1.4 Wideband launch power .19 8.1.5 Band allocation and power spectral density19 8.1.5.1 General pr
11、inciples .19 8.1.5.2 Upstream and downstream bands20 8.1.5.3 Power Spectral Density (PSD) 21 8.1.5.3.1 Conformance criteria .22 8.1.5.3.2 PSD limits for optional regional-specific band allocation.26 8.1.5.4 Mask M1 (notched).29 8.1.5.5 Mask M2 (unnotched).29 8.1.6 Upstream Power Back-Off (UPBO) .29
12、8.1.6.1 Upstream transmit nominal PSD requirement.29 8.1.7 A-B leg (tip-ring) reversal 30 8.2 Transceiver latency.30 8.2.1 Trade-off between channel latency and impulse noise immunity.30 8.2.2 Single latency mode31 8.2.3 Dual latency mode 31 8.2.4 Measuring latency.31 8.3 Remote powering .31 8.4 Pow
13、er-down mode31 8.5 Repeatered operation31 8.6 Payload bit-rates.31 9 Transmission performance .32 9.1 Test procedure32 9.1.1 Test set-up definition 32 ETSI ETSI TS 101 270-1 V1.4.1 (2005-10) 4 9.1.2 Signal and noise level definitions .34 9.2 Test loops .34 9.2.1 Functional description.34 9.2.2 Test
14、loop accuracy 37 9.3 Impairment generators37 9.3.1 Functional description.37 9.3.2 Cable crosstalk models .39 9.3.3 Individual impairment generators.40 9.3.3.1 NEXT noise generator G1 40 9.3.3.2 FEXT noise generator G2.41 9.3.3.3 Background noise generator G3 .41 9.3.3.4 White noise generator G4.41
15、9.3.3.5 Broadcast RF noise generator G5.41 9.3.3.6 Amateur RF noise generator G6.42 9.3.3.6.1 Specification of Amateur RF noise generator43 9.3.3.7 Impulse noise generator G743 9.3.4 Profile of the individual impairment generators .44 9.3.4.1 Frequency domain profiles of generators G1 and G2 .44 9.3
16、.4.1.1 Self crosstalk profiles 44 9.3.4.1.2 Alien crosstalk profiles45 9.3.4.2 Time domain profiles of generators G1 to G4.47 9.3.5 UPBO testing method .48 9.3.5.1 Performance test for UPBO.48 9.4 Transmission Performance tests .49 9.4.1 Electrical length requirements (insertion loss)49 9.4.2 Bit er
17、ror ratio requirements.50 9.4.3 Measuring noise margin50 9.4.4 Generator sets for different test scenarios.50 9.4.5 Upstream tests.51 9.4.6 Downstream tests52 9.5 Micro interruptions.53 10 Transceiver core requirements .53 10.1 Activation/deactivation 53 10.1.1 Activation/deactivation definitions.53
18、 10.1.2 Timing requirements.55 11 Spectral compatibility.55 11.1 Adjacent wire-pairs 55 11.2 Same wire-pair .56 12 Splitter filter requirements56 13 Application specific requirements56 13.1 ATM transport mode56 13.1.1 OAM requirements .56 13.2 SDH transport mode at sub STM-1 rates56 13.2.1 Dual Late
19、ncy.57 13.2.2 OAM requirements .57 13.3 Packet Transport Mode 57 13.3.1 OAM requirements .57 13.4 Additional applications.57 13.4.1 Multiple PDH57 13.4.2 Narrowband in-band .57 13.4.3 IP transport57 13.4.4 Campus access reference models57 Annex A (normative): Line constants for the test loop-set.58
20、Annex B (informative): Cable information63 Annex C (informative): Telephony matching impedance.64 C.1 Germany.64 ETSI ETSI TS 101 270-1 V1.4.1 (2005-10) 5 C.2 United Kingdom.65 Annex D (informative): Illustrative graphs of Peak PSD masks66 Annex E (informative): PSD Templates for VDSL .70 E.1 Introd
21、uction 70 E.1.1 Derivation of PSD templates70 E.1.1.1 Upstream templates.70 E.1.1.2 Downstream FTTCab templates .70 E.1.1.3 Downstream FTTEx templates .71 Annex F (informative): Theoretical reach simulation results 78 Annex G (informative): Bibliography.81 History 82 ETSI ETSI TS 101 270-1 V1.4.1 (2
22、005-10) 6 Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to 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: “Intellectua
23、l 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 investigatio
24、n, 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 server) which are, or may be, or may become, essential to the present document. Foreword This Technical Specification
25、 (TS) has been produced by ETSI Technical Committee Transmission and Multiplexing (TM). The present document is part 1 of a multi-part deliverable covering the Transmission and Multiplexing (TM); Access transmission systems on metallic access cables; Very high speed Digital Subscriber Line (VDSL), a
26、s identified below: Part 1: “Functional requirements“; Part 2: “Transceiver specification“. The present document includes clarification of the noise models, power spectral density masks and evaluation data rates. ETSI ETSI TS 101 270-1 V1.4.1 (2005-10) 7 1 Scope The present document specifies requir
27、ements for transceivers providing very high bit-rate digital transmission on metallic, unshielded, access network wire pairs. The technology is referred to as Very high speed Digital Subscriber Line (VDSL). The present document is part 1 of the specification for VDSL and is applicable to metallic ac
28、cess transmission systems designed to provide multi-megabit/s digital access over part of the existing, unshielded, metallic access network. It is concerned with the key functional and electrical requirements for VDSL. It is linecode independent and is intended to set the boundary requirements that
29、all compliant VDSL transceivers shall meet. TS 101 270-2 18 is concerned with requirements of the linecode method that enable the requirements of the present document to be met. The definition of physical interfaces is outside the scope of the present document. If an appropriate interface for a spec
30、ific application exists it may be included to describe how these requirements map to it. The VDSL transmission system, in its most basic form, consists of an application independent core and an application specific block. The core is purely an application independent bit-pump which transports inform
31、ation from one end of the metallic access link to the other. The digital data is mapped into a core frame that is defined logically and not physically. The core frame is therefore considered to be the interface between the application specific and the application independent part of the VDSL system.
32、 The application specific part may be subdivided into (at least) two smaller parts: mapping and interface. The scope of the present document is shown graphically in figure 1 and figure 2, where the Network Termination (NT) and Line Termination (LT) are considered separately. InterfaceWire-pairVDSLNe
33、twork TerminationOut of scopeWithin scopeVDSL core frameVDSL application frameUNI at T reference pointMapping TransceiverUNIFigure 1: NT reference model scope ETSI ETSI TS 101 270-1 V1.4.1 (2005-10) 8 Wire-pairVDSLLine TerminationVDSL core frameWithin scopeOut of scopeONU or Exchangeline cardTransce
34、iver Mapping UPFVDSL applicationframeFigure 2: LT reference model scope 2 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 and/or edition numbe
35、r or version number) or non-specific. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest version applies. Referenced documents which are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Reference. 1
36、 CENELEC EN 55022 (1998): “Information technology equipment - Radio disturbance characteristics - Limits and methods of measurement“. 2 CENELEC EN 61000-4-6 (1996): “Electromagnetic compatibility (EMC) - Part 4-6: Testing and measurement techniques - Immunity to conducted disturbances, induced by ra
37、dio-frequency fields“. 3 ETSI TS 102 080: “Transmission and Multiplexing (TM); Integrated Services Digital Network (ISDN) basic rate access; Digital transmission system on metallic local lines“. 4 ETSI EN 300 001: “Attachments to the Public Switched Telephone Network (PSTN); General technical requir
38、ements for equipment connected to an analogue subscriber interface in the PSTN“. 5 ETSI TBR 021: “Terminal Equipment (TE); Attachment requirements for pan-European approval for connection to the analogue Public Switched Telephone Networks (PSTNs) of TE (excluding TE supporting the voice telephony se
39、rvice) in which network addressing, if provided, is by means of Dual Tone Multi Frequency (DTMF) signalling“. 6 ETSI EN 300 019-1-0: “Environmental Engineering (EE); Environmental conditions and environmental tests for telecommunications equipment; Part 1-0: Classification of environmental condition
40、s; Introduction“. ETSI ETSI TS 101 270-1 V1.4.1 (2005-10) 9 7 ETSI EN 300 019-1-3: “Environmental Engineering (EE); Environmental conditions and environmental tests for telecommunications equipment; Part 1-3: Classification of environmental conditions; Stationary use at weatherprotected locations“.
41、8 ETSI EN 300 019-2-0: “Environmental Engineering (EE); Environmental conditions and environmental tests for telecommunications equipment; Part 2-0: Specification of environmental tests; Introduction“. 9 ITU-T Recommendation G.703: “Physical/electrical characteristics of hierarchical digital interfa
42、ces“. 10 ITU-T Recommendation G.704: “Synchronous frame structures used at 1 544, 6 312, 2 048, 8 448 and 44 736 kbit/s hierarchical levels“. 11 ITU-T Recommendation G.117: “Transmission aspects of unbalance about earth“. 12 ITU-T Recommendation G.227: “Conventional telephone signal“. 13 ITU-T Recom
43、mendation O.9: “Measuring arrangements to assess the degree of unbalance about earth“. 14 ITU-T Recommendation Q.552: “Transmission characteristics at 2-wire analogue interfaces of digital exchanges“. 15 IETF RFC 2684 (1999): “Multiprotocol Encapsulation over ATM Adaptation Layer 5“. 16 Council Dire
44、ctive 89/336/EEC of 3 May 1989 on the approximation of the laws of the Member States relating to electromagnetic compatibility (EMC Directive). 17 ETSI TS 101 952: “Access network xDSL transmission filters“. 18 ETSI TS 101 270-2: “Transmission and Multiplexing (TM); Access transmission systems on me
45、tallic access cables; Very High Speed Digital Subscriber Line (VDSL); Part 2: Transceiver specification“. 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: clear channel: transparent bit or byte pipe crest fa
46、ctor: peak to rms voltage ratio design impedance (RV): target input and output impedance of the VDSL modem downstream: transmission in the direction of LT towards NT (network to customer premise) FTTCab: VDSL LT transceivers located physically at a node (normally the Cabinet or PCP) in the periphery
47、 of the access network FTTEx: VDSL LT transceivers located physically at the serving local exchange payload bit rate: total data rate that is available to user data in any one direction Reference impedance (RN): chosen impedance used for specifying transmission and reflection characteristics of cabl
48、es and test loops ETSI has normalized this value at 135 for a wide range of xDSL performance and conformance tests, including ADSL tests. This value is considered as being a reasonable average of characteristic impedances (Z0) observed for a wide range of commonly used European distribution cables.
49、upstream: transmission in the direction of NT towards LT (customer premise to network) ETSI ETSI TS 101 270-1 V1.4.1 (2005-10) 10xDSL: generic term covering the family of all DSL technologies EXAMPLE: DSL, HDSL, SDSL, ADSL, VDSL. 3.2 Symbols For the purposes of the present document, the following symbols apply: fT Test loop calibration frequency for setting the insertion loss of the loop kbit/s kilo-bits per second kbps kilo-bits per second (1 kbps = 1 000 bits per second = 1 kbit/s) Mbps Mega bits per second (
