1、 ETSI EN 302 878-2 V1.1.1 (2011-11) Access, Terminals, Transmission and Multiplexing (ATTM); Third Generation Transmission Systems for Interactive Cable Television Services - IP Cable Modems; Part 2: Physical Layer; DOCSIS 3.0 European Standard ETSI ETSI EN 302 878-2 V1.1.1 (2011-11) 2Reference DEN/
2、ATTM-003006-2 Keywords access, broadband, cable, data, IP, IPCable, modem 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)
3、N 7803/88 Important notice Individual copies of the present document can be downloaded from: http:/www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference
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6、ification No 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 2011. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of
7、ETSI registered for the benefit of its Members. 3GPPTM and LTE are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI EN 302 878-2 V1.1.1 (2011-11) 3Content
8、s Intellectual Property Rights 9g3Foreword . 9g31 Scope 10g31.1 Introduction and Purpose 10g31.2 Requirements 10g31.3 Conventions 10g32 References 11g32.1 Normative references . 11g32.2 Informative references 12g33 Definitions and abbreviations . 12g33.1 Definitions 12g33.2 Abbreviations . 18g34 Voi
9、d 20g35 Functional Assumptions . 20g35.1 Equipment Assumptions . 20g35.1.1 Frequency Plan . 20g35.1.2 Compatibility with Other Services 20g35.1.3 Fault Isolation Impact on Other Users 20g35.1.4 Cable System Terminal Devices . 21g35.2 RF Channel Assumptions . 21g35.2.1 Transmission Downstream . 21g35
10、.2.2 Transmission Upstream 21g35.2.2.1 Availability 22g35.3 Transmission Levels . 22g35.4 Frequency Inversion . 22g36 Physical Media Dependent Sublayer Specification 23g36.1 Scope 23g36.2 Upstream 23g36.2.1 Overview 23g36.2.2 Signal Processing Requirements . 24g36.2.3 Modulation Formats 26g36.2.4 R-
11、S Encode . 27g36.2.4.1 R-S Encode Modes 27g36.2.4.2 R-S Bit-to-Symbol Ordering . 27g36.2.5 Upstream R-S Frame Structure for DOCSIS 3.0 Multiple Transmit Channel mode Enabled 27g36.2.5.1 R-S Codeword Length. 28g36.2.5.1.1 Burst Size 28g36.2.5.1.2 Fixed Codeword Length 28g36.2.5.1.3 Shortened Last Cod
12、eword . 29g36.2.5.2 R-S FEC Disabled . 29g36.2.6 Upstream R-S Frame Structure for DOCSIS 3.0 Multiple Transmit Channel mode Not Enabled . 29g36.2.7 TDMA Byte Interleaver 29g36.2.7.1 Byte Interleaver Parameters 29g36.2.7.2 Interleaver Operating Modes . 30g36.2.7.2.1 Fixed Mode 30g36.2.7.2.2 Dynamic M
13、ode 31g36.2.8 Scrambler (Randomizer) . 32g36.2.9 TCM Encoder . 33g36.2.9.1 Byte to TCM Symbol Mapping . 33g36.2.10 Preamble Prepend . 35g36.2.11 Modulation Rates 36g36.2.11.1 DOCSIS 3.0 Modulation Rates . 36g36.2.11.2 Backward Compatibility Modulation Rates 36g3ETSI ETSI EN 302 878-2 V1.1.1 (2011-11
14、) 46.2.12 S-CDMA Framer and Interleaver . 36g36.2.12.1 S-CDMA Framing Considerations 36g36.2.12.2 Mini-slot Numbering . 36g36.2.12.2.1 Mini-slot Numbering Parameters in UCD . 38g36.2.12.2.2 Mini-slot Numbering Examples 39g36.2.12.3 Transmission Time 40g36.2.12.4 Latency Considerations . 40g36.2.12.5
15、 Spreader-off Bursts for Maintenance on S-CDMA channel . 40g36.2.12.6 Limiting the Number of Codes Assigned to a CM 42g36.2.13 S-CDMA Framer 42g36.2.13.1 Subframe Definition 42g36.2.13.2 Framer Operation 43g36.2.13.2.1 Rules for Preamble and Coded TCM Symbols 43g36.2.13.2.2 Rules for Uncoded Symbols
16、 and the Uncoded TCM Subsymbols 44g36.2.13.2.3 Subframe Example 44g36.2.13.2.4 Frame Transmission 45g36.2.14 Symbol Mapping 45g36.2.15 S-CDMA Spreader 51g36.2.15.1 Code Hopping . 52g36.2.15.1.1 Code Hopping Mode 1 53g36.2.15.1.2 Code Hopping Mode 2 53g36.2.15.1.3 Code hopping generator. 55g36.2.16 T
17、ransmit Pre-Equalizer . 57g36.2.17 Spectral Shaping . 59g36.2.17.1 Upstream Frequency Agility and Range . 59g36.2.17.2 Spectrum Format . 59g36.2.18 Relative Processing Delays . 59g36.2.19 Transmit Power Requirements 60g36.2.19.1 TDMA Transmit Power Calculations 64g36.2.19.2 S-CDMA Transmit Power Cal
18、culations 65g36.2.19.2.1 S-CDMA Transmit Power Calculations when Maximum Scheduled Codes Is Not Enabled 65g36.2.19.2.2 S-CDMA Transmit Power Calculations When Maximum Scheduled Codes is Enabled 66g36.2.19.3 Transmit Power Step Size . 69g36.2.19.4 Transmit Power Requirements for Multiple Transmit Cha
19、nnel mode Not Enabled . 69g36.2.20 Burst Profiles 70g36.2.20.1 Ranging Offset 71g36.2.20.2 TDMA Reconfiguration Times . 72g36.2.20.3 S-CDMA Reconfiguration Time. 73g36.2.20.4 CM Timing Offsets When Changing Modulation Rate. 74g36.2.21 Burst Timing Convention . 75g36.2.22 Fidelity Requirements . 76g3
20、6.2.22.1 Spurious Emissions . 76g36.2.22.1.1 Adjacent Channel Spurious Emissions 79g36.2.22.1.2 Spurious Emissions in the Upstream Frequency Range 79g36.2.22.2 Spurious Emissions During Burst On/Off Transients . 80g36.2.22.3 Modulation Error Ratio (MER) . 80g36.2.22.3.1 Definitions . 80g36.2.22.3.2
21、Requirements. 81g36.2.22.4 Filter Distortion . 82g36.2.22.4.1 Amplitude 82g36.2.22.5 Carrier Phase Noise . 83g36.2.22.6 Channel Frequency Accuracy . 83g36.2.22.7 Modulation Rate Accuracy . 83g36.2.22.8 Modulation Timing Jitter 83g36.2.22.8.1 Symbol Timing Jitter for TDMA Upstream Channels in Asynchr
22、onous Operation 83g36.2.22.8.2 Modulation Timing Jitter for Synchronous Operation . 84g36.2.23 Upstream Demodulator Input Power Characteristics 84g36.2.24 Upstream Electrical Output from the CM . 85g36.2.25 Upstream CM Transmitter Capabilities 86g36.2.25.1 Description of CM Upstream Transmit Channel
23、 Set Capability . 86g36.3 Downstream . 87g36.3.1 Downstream Protocol and Interleaving Support . 87g3ETSI ETSI EN 302 878-2 V1.1.1 (2011-11) 56.3.2 Downstream Electrical Input to CM . 87g36.3.3 CM BER Performance 87g36.3.3.1 64-QAM 88g36.3.3.1.1 64-QAM CM BER Performance . 88g36.3.3.1.2 Image Rejecti
24、on Performance . 88g36.3.3.1.3 64-QAM Adjacent Channel Performance 88g36.3.3.2 256-QAM 88g36.3.3.2.1 256-QAM CM BER Performance . 88g36.3.3.2.2 256-QAM Image Rejection Performance 88g36.3.3.2.3 256-QAM Adjacent Channel Performance 89g36.3.4 Downstream Multiple Receiver Capabilities 89g36.3.4.1 Recei
25、ve Module Parameters 89g36.3.4.2 Receive Channel Parameters. 90g36.3.4.3 Standard Receive Channel Profile . 90g36.3.4.4 Example Manufacturer Receive Channel Profile 91g36.3.4.5 Reconfiguration of CM Receive Channels 92g36.3.5 Non-Synchronous DS Channel Support . 92g3Annex A (normative): Timing Requi
26、rements for Supporting Business Services over DOCSIS 93g3A.1 CMTS . 93g3A.2 CM 93g3Annex B (normative): Additions and Modifications for European Specification 94g3B.1 Scope 94g3B.1.1 Introduction and Purpose 94g3B.1.2 Background 94g3B.1.2.1 Broadband Access Network 94g3B.1.2.2 Network and System Arc
27、hitecture 94g3B.1.2.2.1 The DOCSIS Network 94g3B.1.2.3 Service Goals 95g3B.1.2.4 Statement of Compatibility . 95g3B.1.2.5 Reference Architecture . 95g3B.1.2.6 Void 95g3B.1.3 Requirements 95g3B.1.4 Conventions 95g3B.1.5 Void 95g3B.2 References 95g3B.2.1 Normative References 95g3B.2.2 Informative Refe
28、rences 95g3B.2.3 Reference Acquisition 95g3B.3 Terms and Definitions 95g3B.4 Abbreviations and Acronyms . 96g3B.5 Functional Assumptions . 96g3B.5.1 Equipment Assumptions . 96g3B.5.1.1 Frequency Plan . 96g3B.5.1.2 Compatibility with Other Services 96g3B.5.1.3 Fault Isolation Impact on Other Users 96
29、g3B.5.1.4 Cable System Terminal Devices . 96g3B.5.2 RF Channel Assumptions . 96g3B.5.2.1 Transmission Downstream . 97g3B.5.2.2 Transmission Upstream 98g3B.5.2.2.1 Availability 98g3B.5.3 Transmission Levels . 98g3B.5.4 Frequency Inversion . 98g3B.6 Physical Media Dependent Sublayer Specification 98g3
30、B.6.1 Scope 98g3ETSI ETSI EN 302 878-2 V1.1.1 (2011-11) 6B.6.2 Upstream 99g3B.6.2.1 Overview 99g3B.6.2.2 Signal Processing Requirements . 100g3B.6.2.3 Modulation Formats 100g3B.6.2.4 R-S Encode . 100g3B.6.2.4.1 R-S Encode Modes 100g3B.6.2.4.2 R-S Bit-to-Symbol Ordering . 100g3B.6.2.5 Upstream R-S Fr
31、ame Structure for DOCSIS 3.0 Multiple Transmit Channel mode Enabled 100g3B.6.2.5.1 R-S Codeword Length. 100g3B.6.2.5.1.1 Burst Size 100g3B.6.2.5.1.2 Fixed Codeword Length 101g3B.6.2.5.1.3 Shortened Last Codeword . 101g3B.6.2.5.2 R-S FEC Disabled . 101g3B.6.2.6 Upstream R-S Frame Structure for DOCSIS
32、 3.0 Multiple Transmit Channel mode Not Enabled . 101g3B.6.2.7 TDMA Byte Interleaver 101g3B.6.2.7.1 Byte Interleaver Parameters 101g3B.6.2.7.2 Interleaver Operating Modes . 101g3B.6.2.7.2.1 Fixed Mode 101g3B.6.2.7.2.2 Dynamic Mode 101g3B.6.2.8 Scrambler (Randomizer) . 101g3B.6.2.9 TCM Encoder . 101g
33、3B.6.2.9.1 Byte to TCM Symbol Mapping . 101g3B.6.2.10 Preamble Prepend . 101g3B.6.2.11 Modulation Rates 101g3B.6.2.11.1 DOCSIS 3.0 Modulation Rates . 102g3B.6.2.11.2 Backward Compatibility Modulation Rates 102g3B.6.2.12 S-CDMA Framer and Interleaver . 102g3B.6.2.12.1 S-CDMA Framing Considerations 10
34、2g3B.6.2.12.2 Mini-slot Numbering . 102g3B.6.2.12.2.1 Mini-slot Numbering Parameters in UCD . 102g3B.6.2.12.2.2 Mini-slot Numbering Examples 102g3B.6.2.12.3 Transmission Time 102g3B.6.2.12.4 Latency Considerations . 102g3B.6.2.12.5 Spreader-off Bursts for Maintenance on S-CDMA channel . 102g3B.6.2.1
35、2.6 Limiting the Number of Codes Assigned to a CM 102g3B.6.2.13 S-CDMA Framer 102g3B.6.2.13.1 Subframe Definition 102g3B.6.2.13.2 Framer Operation 102g3B.6.2.13.2.1 Rules for Preamble and Coded TCM Symbols 102g3B.6.2.13.2.2 Rules for Uncoded Symbols and the Uncoded TCM Subsymbols 103g3B.6.2.13.2.3 S
36、ubframe Example 103g3B.6.2.13.2.4 Frame Transmission 103g3B.6.2.14 Symbol Mapping 103g3B.6.2.15 S-CDMA Spreader 103g3B.6.2.15.1 Code Hopping . 103g3B.6.2.15.1.1 Code Hopping Mode 1 103g3B.6.2.15.1.2 Code Hopping Mode 2 103g3B.6.2.15.1.3 Code Hopping Generator . 103g3B.6.2.16 Transmit Pre-Equalizer .
37、 103g3B.6.2.17 Spectral Shaping . 105g3B.6.2.17.1 Upstream Frequency Agility and Range . 105g3B.6.2.17.2 Spectrum Format . 105g3B.6.2.18 Relative Processing Delays . 105g3B.6.2.19 Transmit Power Requirements 106g3B.6.2.19.1 TDMA Transmit Power Calculations 109g3B.6.2.19.2 S-CDMA Transmit Power Calcu
38、lations 110g3B.6.2.19.2.1 S-CDMA Transmit power Calculations with Maximum Scheduled Codes Not Enabled . 110g3B.6.2.19.2.2 S-CDMA Transmit Power Calculations With Maximum Scheduled Codes Enabled . 112g3B.6.2.19.3 Transmit Power Step Size . 114g3B.6.2.19.4 Transmit Power Requirements for Multiple Tran
39、smit Channel mode Not Enabled . 114g3B.6.2.20 Burst Profiles 115g3B.6.2.20.1 Ranging Offset 116g3ETSI ETSI EN 302 878-2 V1.1.1 (2011-11) 7B.6.2.20.2 TDMA Reconfiguration Times . 116g3B.6.2.20.3 S-CDMA Reconfiguration Times . 118g3B.6.2.20.4 CM Timing Offsets When Changing Modulation Rate. 118g3B.6.2
40、.21 Burst Timing Convention . 118g3B.6.2.22 Fidelity Requirements . 118g3B.6.2.22.1 Spurious Emissions . 118g3B.6.2.22.1.1 Adjacent Channel Spurious Emissions 120g3B.6.2.22.1.2 Spurious Emissions in the Upstream Frequency Range 121g3B.6.2.22.2 Spurious Emissions During Burst On/Off Transients . 121g
41、3B.6.2.22.3 Modulation Error Ratio (MER) . 121g3B.6.2.22.3.1 Definitions . 122g3B.6.2.22.3.2 Requirements . 122g3B.6.2.22.4 Filter Distortion . 122g3B.6.2.22.4.1 Amplitude 123g3B.6.2.22.5 Carrier Phase Noise . 123g3B.6.2.22.6 Channel Frequency Accuracy . 123g3B.6.2.22.7 Modulation Rate Accuracy . 12
42、3g3B.6.2.22.8 Modulation Timing Jitter 123g3B.6.2.22.8.1 Symbol Timing Jitter for TDMA Upstream Channels in Asynchronous Operation 123g3B.6.2.22.8.2 Modulation Timing Jitter for Synchronous Operation . 123g3B.6.2.23 Upstream Demodulator Input Power Characteristics 123g3B.6.2.24 Upstream Electrical O
43、utput from the CM . 123g3B.6.2.25 Upstream CM Transmitter Capabilities 124g3B.6.2.25.1 Description of CM Upstream Transmit Channel Set Capabilities. 124g3B.6.3 Downstream . 124g3B.6.3.1 Downstream Protocol and Interleaving Support . 124g3B.6.3.2 Downstream Electrical Input to CM . 125g3B.6.3.3 CM BE
44、R Performance 125g3B.6.3.3.1 64-QAM 125g3B.6.3.3.1.1 64-QAM CM BER Performance . 125g3B.6.3.3.1.2 64-QAM Image Rejection Performance 126g3B.6.3.3.1.3 64-QAM Adjacent Channel Performance 126g3B.6.3.3.2 256-QAM 126g3B.6.3.3.2.1 256-QAM CM BER Performance . 126g3B.6.3.3.2.2 256-QAM Image Rejection Perf
45、ormance 126g3B.6.3.3.2.3 256-QAM Adjacent Channel Performance 126g3B.6.3.4 Downstream Multiple Receiver Capabilities 126g3B.6.3.4.1 Receive Module Parameters 126g3B.6.3.4.2 Receive Channel Parameters . 127g3B.6.3.4.3 Standard Receive Channel Profile . 127g3B.6.3.4.4 Example Manufacturer Receive Chan
46、nel Profile 127g3B.6.3.4.5 Reconfiguration of CM Receive Channels 128g3B.6.3.5 Non-Synchronous DS Channel Support . 128g3Annex C (normative): MPEG Header Synchronization and Recovery. 129g3C.1 MPEG Header Synchronization and Recovery in the North American Technology Option . 129g3C.2 MPEG Header Syn
47、chronization and Recovery in the European Technology Option 129g3Annex D (informative): Example Preamble Sequence Introduction . 130g3D.1 Example Preamble Sequence . 130g3Annex E (informative): S-CDMA Framing 132g3E.1 Coded Subsymbol Numbering . 132g3E.2 Uncoded Subsymbol Numbering . 132g3E.3 Framer
48、 Output Numbering . 133g3E.4 Comments . 133g3Annex F (informative): Ambient Temperature and Wind Loading Effects . 134g3ETSI ETSI EN 302 878-2 V1.1.1 (2011-11) 8F.1 Synchronization Tolerances to Plant Delay Variations 134g3F.2 Change in Propagation Delay Due to Temperature Changes . 135g3F.2.1 Fibre
49、 Delay Changes Due to Temperature . 135g3F.2.2 Coaxial Cable Delay Changes Due to Temperature . 136g3F.2.3 Delay Change Due to Wind 136g3Annex G (informative): Description of Upstream Transmit Channel Set Capability: Example Calculations for Reporting and Figuring the Number of Active Channels Supported 137g3Annex H (informative): Description of Upstream Channel Power Control with Multiple Upstream Channels 139g3H.1 DOCSIS 2.0 Parameters Extended to Multiple Transmit Channel mode . 139g3H.2 New Parameters in DOCSIS 3.0 Upstream Power Control (“loading,“ Pload_n, Pload_min_set,
