ETSI TS 103 311-3 V1.1.1 (2017-02)

Integrated broadband cable telecommunication networks (CABLE); Fourth Generation Transmission Systems for Interactive Cable Television Services - IP Cable Modems; Part 3: MAC and Upper Layer Protocols Interface; DOCSIS® 3.1

DTS/CABLE-00017-3

General Information

• Status: Published
• Publication Date: 14-Feb-2017
• Technical Committee: CABLE WG1 - Architecture, Interfaces, protocols
• Current Stage: 12 - Completion
• Due Date: 20-Jun-2017
• Completion Date: 15-Feb-2017

Standards Content (Sample)

ETSI TS 103 311-3 V1.1.1 (2017-02)






TECHNICAL SPECIFICATION
Integrated broadband cable
telecommunication networks (CABLE);
Fourth Generation Transmission Systems for
Interactive Cable Television Services - IP Cable Modems;
Part 3: MAC and Upper Layer Protocols Interface;
®
DOCSIS 3.1

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2 ETSI TS 103 311-3 V1.1.1 (2017-02)



Reference
DTS/CABLE-00017-3
Keywords
access, broadband, cable, DOCSIS, IPcable,
modem, multimedia
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3 ETSI TS 103 311-3 V1.1.1 (2017-02)
Contents
Intellectual Property Rights . 28
Foreword . 28
Modal verbs terminology . 28
1 Scope . 29
2 References . 29
2.1 Normative references . 29
2.2 Informative references . 32
3 Definitions, symbols and abbreviations . 34
3.1 Definitions . 34
3.2 Symbols . 45
3.3 Abbreviations . 45
4 Requirements and Conventions . 52
4.1 Requirements . 52
4.2 Conventions . 52
5 Overview and Theory of Operations . 52
5.1 MULPI Key Features . 52
5.2 Technical Overview . 55
5.2.0 MAC Layer Features . 55
5.2.1 CMTS and CM Models . 55
5.2.1.1 CMTS Model . 55
5.2.1.1.0 Overview . 55
5.2.1.1.1 CMTS Types . 56
5.2.1.1.2 CMTS Internal Forwarding Model . 57
5.2.1.1.3 CMTS MAC Domain . 58
5.2.1.2 CM Model . 59
5.2.2 Downstream Convergence Layer . 59
5.2.2.1 Control Channel . 59
5.2.2.1.1 PLC . 59
5.2.2.1.2 NCP . 59
5.2.2.2 Profiles . 60
5.2.2.2.1 Multiple Downstream Profile Support in OFDM Channels . 60
5.2.3 OFDMA Upstream . 60
5.2.4 QoS . 61
5.2.4.0 Overview . 61
5.2.4.1 Individual and Group Service Flows . 62
5.2.4.2 Hierarchical QoS . 62
5.2.4.3 AQM . 63
5.2.4.4 Channel Bonding . 63
5.2.4.4.1 Downstream Channel Bonding . 63
5.2.4.4.2 Upstream Channel Bonding . 64
5.2.4.5 Upstream Time and Frequency Multiplexing . 66
5.2.4.6 Autonomous Load Balancing . 67
5.2.5 Multicast Operation . 68
5.2.6 Network and Higher Layer Protocols . 68
5.2.7 CM and CPE Provisioning and Management . 69
5.2.7.1 Initialization, Provisioning and Management of CMs . 69
5.2.7.2 Initialization, Provisioning and Management of CPEs . 70
5.2.8 Enhanced Support for Timing Protocol . 70
5.2.9 Energy Management . 70
5.2.10 Relationship to the Physical HFC Plant Topology . 71
5.2.10.1 RF Topology Configuration . 71
5.2.10.2 Frequency Assignment . 72
5.2.11 Cable Modem Service Group (CM-SG) . 73
5.2.11.0 Overview . 73
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4 ETSI TS 103 311-3 V1.1.1 (2017-02)
5.2.11.1 MAC Domain Channel Assignment. 74
5.2.11.2 Multiple MAC Domains per Fibre Node . 75
5.2.11.3 MAC Domain Downstream and Upstream Service Groups . 76
5.2.11.4 Channel Bonding Topology Considerations . 77
5.2.12 CMTS Downstream Service Model Example . 77
6 Media Access Control Specification . 79
6.1 Introduction . 79
6.1.1 Overview . 79
6.1.2 Definitions . 79
6.1.2.1 MAC-Sublayer Domain . 79
6.1.2.2 MAC Service Access Point . 79
6.1.2.3 Service Flows . 79
6.1.2.4 Upstream Intervals, Minislots and 6,25 microsecond Increments . 80
6.1.2.4.0 Upstream Transmission Timeline . 80
6.1.2.4.1 TDMA Mode . 80
6.1.2.4.2 S-CDMA Mode . 80
6.1.2.4.3 OFDMA Mode . 81
6.1.2.5 MAC Frame . 81
6.1.2.6 Logical Upstream Channels . 81
6.1.2.6.0 Logical Upstream Types . 81
6.1.2.6.1 Type 3 Logical Upstreams . 82
6.1.2.6.2 Type 4 Logical Upstreams . 82
6.1.2.6.3 Type 5 Logical Upstreams . 83
6.1.3 Future Use . 83
6.2 MAC Frame Formats. 83
6.2.1 Generic MAC Frames . 83
6.2.1.0 Generic MAC Frame Format . 83
6.2.1.1 PMD Overhead . 84
6.2.1.2 Ordering of Bits and Octets . 84
6.2.1.2.1 Bit Ordering . 84
6.2.1.2.2 Octet Ordering . 84
6.2.1.2.3 Textual Conventions . 84
6.2.1.2.4 Representing Negative Numbers . 84
6.2.1.2.5 Type-Length-Value Fields . 84
6.2.1.3 MAC Header Format. 85
6.2.1.4 Data PDU . 86
6.2.2 Packet-Based MAC Frames . 86
6.2.2.1 Packet PDU and Isolation Packet PDU . 86
6.2.3 MAC Frames with FC_TYPE 0x01 . 87
6.2.4 MAC-Specific Headers . 87
6.2.4.0 Overview . 87
6.2.4.1 Timing Header . 88
6.2.4.2 MAC Management Header . 88
6.2.4.3 Request Frame . 89
6.2.4.4 Fragmentation Header . 90
6.2.4.5 Queue-depth Based Request Frame . 91
6.2.4.6 Concatenation Header . 91
6.2.5 Extended MAC Frame Length . 92
6.2.6 Extended MAC Headers . 93
6.2.6.0 Overview and General Requirements. 93
6.2.6.1 Piggyback Requests . 94
6.2.6.2 Request Extended Header . 94
6.2.6.3 Fragmentation Extended Header . 94
6.2.6.4 Service Flow Extended Header . 95
6.2.6.4.0 Overview . 95
6.2.6.4.1 Payload Header Suppression Header . 95
6.2.6.4.2 Unsolicited Grant Synchronization Header . 95
6.2.6.5 BP_UP2 Extended Header . 95
6.2.6.6 Downstream Service Extended Header . 96
6.2.6.7 DPV Extended Header . 97
6.2.6.8 Ordering of Extended Headers in Upstream DOCSIS . 97
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5 ETSI TS 103 311-3 V1.1.1 (2017-02)
6.3 Segment Header Format . 98
6.4 MAC Management Messages. 98
6.4.1 MAC Management Message Header . 98
6.4.2 Time Synchronization (SYNC). 102
6.4.3 Upstream Channel Descriptor (UCD) . 103
6.4.3.0 UCD Message Format, Parameters and Attributes. 103
6.4.3.1 Example of UCD Encoded TLV Data . 114
6.4.3.2 Example of UCD Encoding of Channel Parameters for OFDMA Channels . 115
6.4.3.3 Subcarrier to Minislot Mapping for OFDMA Channels . 117
6.4.3.4 Required Burst Attributes on OFDMA Channels . 117
6.4.4 Upstream Bandwidth Allocation Map (MAP) . 118
6.4.4.0 MAP Types, Message Format and Information Elements . 118
6.4.4.1 Upstream Quiet Probe Measurement . 124
6.4.5 Ranging Request Messages . 125
6.4.5.0 Types of Ranging Request Messages . 125
6.4.5.1 Ranging Request (RNG-REQ) . 127
6.4.5.2 Initial Ranging Request (INIT-RNG-REQ) . 128
6.4.5.3 Bonded Initial Ranging Request (B-INIT-RNG-REQ) . 128
6.4.5.4 OFDMA Initial Ranging Request (O-INIT-RNG-REQ) . 129
6.4.6 Ranging Response (RNG-RSP) . 129
6.4.6.0 RNG-RSP Message Format . 129
6.4.6.1 RNG-RSP Encodings . 131
6.4.6.2 Example of TLV Data . 133
6.4.6.3 Transmit Equalization Encodings for S-CDMA and TDMA Channels . 134
6.4.6.4 Transmit Equalization Encodings for OFDMA Channels . 135
6.4.6.5 RNG-RSP Channel Overrides . 135
6.4.6.6 Upstream Channel Adjustments . 135
6.4.6.7 T4 Timeout Multiplier. 136
6.4.6.8 Commanded Power . 136
6.4.7 Registration Request Messages . 137
6.4.7.0 Types of Registration Request Messages . 137
6.4.7.1 Registration Request (REG-REQ) . 138
6.4.7.2 Multipart Registration Request (REG-REQ-MP) . 138
6.4.8 Registration Response Messages . 139
6.4.8.0 Types and Formatting of Registration Response Messages . 139
6.4.8.1 Registration Response (REG-RSP) . 140
6.4.8.2 Multipart Registration Response (REG-RSP-MP) . 141
6.4.8.3 Encodings . 142
6.4.8.3.0 General . 142
6.4.8.3.1 Modem Capabilities . 142
6.4.8.3.2 DOCSIS 1.0 Service Class Data . 143
6.4.9 Registration Acknowledge (REG-ACK) . 143
6.4.10 Upstream Channel Change Request (UCC-REQ) . 145
6.4.11 Upstream Channel Change Response (UCC-RSP) . 145
6.4.12 Dynamic Service Addition - Request (DSA-REQ) . 145
6.4.12.0 DSA-REQ Message Format . 145
6.4.12.1 CM-Initiated Dynamic Service Addition . 146
6.4.12.2 CMTS-Initiated Dynamic Service Addition . 146
6.4.13 Dynamic Service Addition - Response (DSA-RSP) . 146
6.4.13.0 DSA-RSP Message Format . 146
6.4.13.1 CM-Initiated Dynamic Service Addition . 148
6.4.13.2 CMTS-Initiated Dynamic Service Addition . 148
6.4.14 Dynamic Service Addition - Acknowledge (DSA-ACK) . 148
6.4.15 Dynamic Service Change - Request (DSC-REQ) . 149
6.4.16 Dynamic Service Change - Response (DSC-RSP) . 150
6.4.17 Dynamic Service Change - Acknowledge (DSC-ACK) . 152
6.4.18 Dynamic Service Deletion - Request (DSD-REQ) . 152
6.4.19 Dynamic Service Deletion - Response (DSD-RSP) . 153
6.4.20 Dynamic Channel Change - Request (DCC-REQ) . 154
6.4.20.0 DCC-REQ Message Format . 154
6.4.20.1 Encodings . 155
6.4.20.1.0 General . 155
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6 ETSI TS 103 311-3 V1.1.1 (2017-02)
6.4.20.1.1 Upstream Channel ID . 155
6.4.20.1.2 Downstream Parameters .
...