1、 ETSI EN 302 878-4 V1.1.1 (2011-11) Access, Terminals, Transmission and Multiplexing (ATTM); Third Generation Transmission Systems for Interactive Cable Television Services - IP Cable Modems; Part 4: MAC and Upper Layer Protocols; DOCSIS 3.0 European Standard ETSI ETSI EN 302 878-4 V1.1.1 (2011-11)
2、2Reference DEN/ATTM-003006-4 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
3、de Grasse (06) 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
4、, the reference version is 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 revis
5、ion or change of status. Information 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.as
6、p Copyright Notification 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
7、Trade Marks of 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 302 878-4 V1.1.1 (20
8、11-11) 3Contents Intellectual Property Rights 22g3Foreword . 22g31 Scope 23g31.1 Introduction and Purpose 23g31.2 Requirements 23g31.3 Conventions 23g32 References 23g32.1 Normative references . 24g32.2 Informative references 27g33 Definitions and abbreviations . 27g33.1 Definitions 27g33.2 Abbrevia
9、tions . 37g34 Void 41g35 Overview and Theory of Operations 41g35.1 DOCSIS 3.0 MULPI Key Features 41g35.2 Technical Overview . 42g35.2.1 CMTS and CM Models . 42g35.2.1.1 CMTS Model 42g35.2.1.1.1 Types of CMTS . 42g35.2.1.1.2 CMTS Internal Forwarding Model 44g35.2.1.1.3 CMTS MAC Domain 45g35.2.1.2 CM
10、Model . 46g35.2.2 DOCSIS MAC Operation . 46g35.2.2.1 QoS . 46g35.2.2.1.1 Individual and Group Service Flows . 47g35.2.2.2 Channel Bonding . 48g35.2.2.2.1 Downstream Channel Bonding 48g35.2.2.2.2 Upstream Channel Bonding . 49g35.2.2.3 Autonomous Load Balancing 51g35.2.3 Multicast Operation 51g35.2.4
11、Network and Higher Layer Protocols . 52g35.2.5 CM and CPE Provisioning and Management . 52g35.2.5.1 Initialization, Provisioning and Management of CMs 52g35.2.5.2 Initialization, Provisioning and Management of CPEs . 53g35.2.6 Relationship to the Physical HFC Plant Topology . 53g35.2.6.1 RF Topology
12、 Configuration 53g35.2.6.2 Frequency Assignment 55g35.2.7 Cable Modem Service Group (CM-SG) . 56g35.2.7.1 MAC Domain Channel Assignment 57g35.2.7.2 Multiple MAC Domains per Fibre Node 58g35.2.7.3 MAC Domain Downstream and Upstream Service Groups 59g35.2.7.4 Channel Bonding Topology Considerations .
13、59g35.2.8 CMTS Downstream Service Model Example . 60g36 Media Access Control Specification 61g36.1 Introduction 61g36.1.1 Overview 61g36.1.2 Definitions 61g36.1.2.1 MAC-Sublayer Domain 61g36.1.2.2 MAC Service Access Point . 62g36.1.2.3 Service Flows 62g36.1.2.4 Upstream Intervals, Mini-Slots and 6,2
14、5-Microsecond Increments 62g36.1.2.4.1 TDMA mode . 62g36.1.2.4.2 S-CDMA mode 63g3ETSI ETSI EN 302 878-4 V1.1.1 (2011-11) 46.1.2.5 MAC Frame 63g36.1.2.6 Logical Upstream Channels 63g36.1.2.6.1 Type 3 Logical Upstreams . 64g36.1.2.6.2 Type 4 Logical Upstreams . 64g36.1.3 Future Use . 65g36.2 MAC Frame
15、 Formats 65g36.2.1 Generic MAC Frame Format 65g36.2.1.1 PMD Overhead . 65g36.2.1.2 MAC Frame Transport 66g36.2.1.3 Ordering of Bits and Octets . 66g36.2.1.3.1 Representing Negative Numbers . 67g36.2.1.3.2 Type-Length-Value Fields . 67g36.2.1.4 MAC Header Format. 67g36.2.1.5 Data PDU 68g36.2.2 Packet
16、-Based MAC Frames 69g36.2.2.1 Packet PDU and Isolation Packet PDU . 69g36.2.3 ATM Cell MAC Frames . 70g36.2.4 MAC-Specific Headers. 70g36.2.4.1 Timing Header 70g36.2.4.2 MAC Management Header . 71g36.2.4.3 Request Frame . 71g36.2.4.4 Fragmentation Header . 72g36.2.4.5 Queue-depth Based Request Frame
17、 73g36.2.4.6 Concatenation Header . 73g36.2.5 Extended MAC Headers . 74g36.2.5.1 Piggyback Requests 76g36.2.5.2 Request Extended Header . 76g36.2.5.3 Fragmentation Extended Header . 76g36.2.5.4 Service Flow Extended Header . 77g36.2.5.4.1 Payload Header Suppression Header . 77g36.2.5.4.2 Unsolicited
18、 Grant Synchronization Header . 78g36.2.5.5 BP_UP2 Extended Header 78g36.2.5.6 Downstream Service Extended Header . 78g36.2.5.7 DPV Extended Header 80g36.3 Segment Header Format . 80g36.4 MAC Management Messages. 81g36.4.1 MAC Management Message Header 81g36.4.2 Time Synchronization (SYNC). 84g36.4.
19、3 Upstream Channel Descriptor (UCD) . 84g36.4.3.1 Example of UCD Encoded TLV Data . 92g36.4.4 Upstream Bandwidth Allocation Map (MAP) 93g36.4.5 Ranging Request Messages 95g36.4.5.1 Ranging Request (RNG-REQ) 97g36.4.5.2 Initial Ranging Request (INIT-RNG-REQ) 98g36.4.5.3 Bonded Initial Ranging Request
20、 (B-INIT-RNG-REQ) . 99g36.4.5.3.1 Capability Flags. 99g36.4.6 Ranging Response (RNG-RSP) 100g36.4.6.1 Encodings 101g36.4.6.2 Example of TLV Data . 102g36.4.6.3 Transmit Equalization Encodings . 103g36.4.6.4 RNG-RSP Channel Overrides . 103g36.4.6.5 Upstream Channel Adjustments 104g36.4.6.6 T4 Timeout
21、 Multiplier. 104g36.4.7 Registration Request Messages . 105g36.4.7.1 Registration Request (REG-REQ) 106g36.4.7.2 Multipart Registration Request (REG-REQ-MP) . 106g36.4.8 Registration Response Messages 107g36.4.8.1 Registration Response (REG-RSP) . 109g36.4.8.2 Multipart Registration Response (REG-RS
22、P-MP) 110g36.4.8.3 Encodings 111g36.4.8.3.1 Modem Capabilities . 111g36.4.8.3.2 DOCSIS 1.0 Service Class Data 111g3ETSI ETSI EN 302 878-4 V1.1.1 (2011-11) 56.4.9 Registration Acknowledge (REG-ACK) 112g36.4.10 Upstream Channel Change Request (UCC-REQ) . 113g36.4.11 Upstream Channel Change Response (U
23、CC-RSP) . 114g36.4.12 Dynamic Service Addition - Request (DSA-REQ) . 114g36.4.12.1 CM-Initiated Dynamic Service Addition 115g36.4.12.2 CMTS-Initiated Dynamic Service Addition 115g36.4.13 Dynamic Service Addition - Response (DSA-RSP) . 116g36.4.13.1 CM-Initiated Dynamic Service Addition 117g36.4.13.2
24、 CMTS-Initiated Dynamic Service Addition 117g36.4.14 Dynamic Service Addition - Acknowledge (DSA-ACK) . 117g36.4.15 Dynamic Service Change - Request (DSC-REQ) . 118g36.4.16 Dynamic Service Change - Response (DSC-RSP) . 120g36.4.17 Dynamic Service Change - Acknowledge (DSC-ACK) . 121g36.4.18 Dynamic
25、Service Deletion - Request (DSD-REQ) . 122g36.4.19 Dynamic Service Deletion - Response (DSD-RSP) 122g36.4.20 Dynamic Channel Change - Request (DCC-REQ) . 123g36.4.20.1 Encodings 124g36.4.20.1.1 Upstream Channel ID 124g36.4.20.1.2 Downstream Parameters 124g36.4.20.1.3 Initialization Technique. 125g36
26、.4.20.1.4 UCD Substitution 126g36.4.20.1.5 Security Association Identifier (SAID) Substitution . 127g36.4.20.1.6 Service Flow Substitutions 127g36.4.20.1.7 CMTS MAC Address 128g36.4.21 Dynamic Channel Change - Response (DCC-RSP) 129g36.4.21.1 Encodings 129g36.4.21.1.1 CM Jump Time 130g36.4.22 Dynami
27、c Channel Change - Acknowledge (DCC-ACK) . 130g36.4.23 Device Class Identification Request (DCI-REQ) . 131g36.4.24 Device Class Identification Response (DCI-RSP) 132g36.4.25 Upstream Transmitter Disable (UP-DIS) 132g36.4.26 Test Request (TST-REQ) 134g36.4.27 Downstream Channel Descriptor (DCD) 135g3
28、6.4.28 MAC Domain Descriptor (MDD) . 135g36.4.28.1 TLV Encodings . 136g36.4.28.1.1 Downstream Active Channel List TLV . 136g36.4.28.1.2 MAC Domain Downstream Service Group (MD-DS-SG) TLV . 137g36.4.28.1.3 Downstream Ambiguity Resolution Frequency List TLV . 138g36.4.28.1.4 Receive Channel Profile Re
29、porting Control TLV . 138g36.4.28.1.5 IP Initialization Parameters TLV . 139g36.4.28.1.6 Early Authentication and Encryption (EAE) Enable/Disable TLV . 139g36.4.28.1.7 Upstream Active Channel List TLV 140g36.4.28.1.8 Upstream Ambiguity Resolution Channel List TLV . 140g36.4.28.1.9 Upstream Frequency
30、 Range TLV 141g36.4.28.1.10 Symbol Clock Locking Indicator 141g36.4.28.1.11 CM-STATUS Event Control . 141g36.4.28.1.12 Upstream Transmit Power Reporting 142g36.4.28.1.13 DSG DA-to-DSID Association Entry 142g36.4.28.1.14 CM-STATUS Event Enable for Non-Channel-Specific Events 142g36.4.28.1.15 Extended
31、 Upstream Transmit Power Support . 143g36.4.29 Dynamic Bonding Change Request (DBC-REQ) . 143g36.4.30 Dynamic Bonding Change Response (DBC-RSP) . 144g36.4.31 Dynamic Bonding Change Acknowledge (DBC-ACK) . 146g36.4.32 DOCSIS Path Verify Request (DPV-REQ) 146g36.4.33 DOCSIS Path Verify Response (DPV-R
32、SP) 148g36.4.34 Status Report (CM-STATUS). 148g36.4.34.1 TLV Encodings . 149g36.4.35 CM Control Request (CM-CTRL-REQ). 149g36.4.35.1 TLV Encodings . 150g36.4.36 CM Control Response (CM-CTRL-RSP) . 150g37 Media Access Control Protocol Operation . 151g3ETSI ETSI EN 302 878-4 V1.1.1 (2011-11) 67.1 Timi
33、ng and Synchronization 151g37.1.1 Global Timing Reference 151g37.1.2 CM Synchronization . 152g37.1.3 Ranging . 152g37.1.3.1 Broadcast Initial Ranging 152g37.1.3.2 Unicast Initial Ranging . 153g37.1.4 Timing Units and Relationships 153g37.1.4.1 TDMA Timing Units and Relationships . 153g37.1.4.1.1 Min
34、i-Slot Capacity 153g37.1.4.1.2 Mini-Slot Numbering 154g37.1.4.2 S-CDMA Timing Units and Relationships . 154g37.1.4.2.1 Mini-Slot Capacity 154g37.1.4.2.2 Mini-Slot Numbering 154g37.2 Upstream Data Transmission . 155g37.2.1 Upstream Bandwidth Allocation . 155g37.2.1.1 The Allocation MAP MAC Management
35、 Message 156g37.2.1.2 Information Elements 156g37.2.1.2.1 The Request IE 156g37.2.1.2.2 The Request/Data IE 157g37.2.1.2.3 The Initial Maintenance IE 157g37.2.1.2.4 The Station Maintenance IE 157g37.2.1.2.5 Short and Long Data Grant IEs . 157g37.2.1.2.6 Data Acknowledge IE 158g37.2.1.2.7 Expansion I
36、E . 158g37.2.1.2.8 Null IE . 158g37.2.1.2.9 Advanced PHY Short and Long Data Grant IEs . 158g37.2.1.2.10 Advanced PHY Unsolicited Grant IE 159g37.2.1.3 Requesting with Multiple Transmit Channel Mode Disabled . 159g37.2.1.4 Requesting with Multiple Transmit Channel Mode Enabled 160g37.2.1.4.1 Request
37、 Mechanisms for Segment Header OFF Service Flows 160g37.2.1.4.2 Request Mechanisms for Segment Header ON Service Flows 160g37.2.1.5 Information Element Feature Usage Summary . 165g37.2.1.6 Map Transmission and Timing . 165g37.2.1.7 Protocol Example 166g37.2.1.8 MAP Generation Example - Two Logical U
38、pstreams. 167g37.2.2 Upstream Transmission and Contention Resolution . 168g37.2.2.1 Contention Resolution Overview 168g37.2.2.1.1 Contention Resolution with Multiple Transmit Channel Mode Disabled . 168g37.2.2.1.2 Contention Resolution with Multiple Transmit Channel Mode Enabled. 169g37.2.2.2 Transm
39、it Opportunities . 171g37.2.2.3 CM Bandwidth Utilization 172g37.2.3 Upstream Service Flow Scheduling Services . 172g37.2.3.1 Unsolicited Grant Service . 173g37.2.3.2 Real-Time Polling Service 173g37.2.3.3 Unsolicited Grant Service with Activity Detection . 174g37.2.3.4 Non-Real-Time Polling Service
40、175g37.2.3.5 Best Effort Service 175g37.2.3.6 Other Services . 175g37.2.3.6.1 Committed Information Rate (CIR). 175g37.2.3.7 Parameter Applicability for Upstream Service Scheduling . 175g37.2.3.8 CM Transmit Behavior . 176g37.2.4 Continuous Concatenation and Fragmentation . 176g37.2.5 Pre-3.0 DOCSIS
41、 Concatenation and Fragmentation . 177g37.2.5.1 Concatenation 177g37.2.5.2 Fragmentation . 178g37.2.5.2.1 CM Fragmentation Support . 180g37.2.5.2.2 CMTS Fragmentation Support 182g37.2.5.2.3 Fragmentation Example . 183g37.2.5.2.4 Pre-Registration Fragmentation . 185g37.2.5.2.5 Considerations for Conc
42、atenated Packets and Fragmentation . 186g37.3 Upstream - Downstream Channel Association within a MAC Domain . 186g37.3.1 Primary Downstream Channels 186g3ETSI ETSI EN 302 878-4 V1.1.1 (2011-11) 77.3.2 MAP and UCD Messages . 187g37.3.3 Multiple MAC Domains . 187g37.4 DSID Definition . 187g37.5 Qualit
43、y of Service . 188g37.5.1 Concepts . 188g37.5.1.1 Service Flows 188g37.5.1.2 Classifiers 190g37.5.1.2.1 Upstream and Downstream QoS Classifiers 190g37.5.1.2.2 Upstream Drop Classifiers. 192g37.5.2 Object Model 192g37.5.3 Service Classes . 194g37.5.4 Authorization 195g37.5.5 States of Service Flows .
44、 195g37.5.5.1 Deferred Service Flows . 195g37.5.5.1.1 Provisioned Service Flows 196g37.5.5.1.2 Authorized Service Flows . 196g37.5.5.2 Admitted Service Flows 196g37.5.5.3 Active Service Flows 197g37.5.6 Service Flows and Classifiers . 197g37.5.6.1 Policy-Based Classification and Service Classes 198g
45、37.5.7 General Operation . 198g37.5.7.1 Static Operation . 198g37.5.7.2 Dynamic Service Flow Creation - CM Initiated 199g37.5.7.3 Dynamic Service Flow Creation - CMTS Initiated . 200g37.5.7.4 Dynamic Service Flow Modification and Deletion . 200g37.5.8 QoS Support for Joined IP Multicast Traffic 201g
46、37.5.8.1 Overview . 202g37.5.8.2 Group Configuration and Group QoS Configuration Tables 203g37.5.8.3 Instantiating Group Classifier Rules and Group Service Flows 204g37.5.8.3.1 Examples of GCR and GSF Instantiation 206g37.5.8.4 Default Group Service Flows 212g37.5.8.5 Service Class QoS Parameter Cha
47、nges . 212g37.5.8.6 Group QoS Configuration Changes 212g37.5.9 Other Multicast and Broadcast Traffic 213g37.6 Downstream Traffic Priority 213g37.6.1 Traffic Priority Ordering and Mapping to CM Output Queues. 213g37.7 Payload Header Suppression 214g37.7.1 Overview 214g37.7.1.1 PHSI-indexed PHS 215g37
48、.7.1.2 DSID-indexed PHS . 215g37.7.2 Example Applications. 216g37.7.3 Operation 216g37.7.4 Signalling 218g37.7.4.1 Signalling PHSI-Indexed Payload Header Suppression 218g37.7.4.2 Signalling DSID-Indexed Payload Header Suppression . 219g37.7.5 Payload Header Suppression Examples 220g37.7.5.1 Upstream
49、 Example 220g37.7.5.2 Downstream Example . 221g37.7.5.3 DSID-Indexed Multicast Example 222g37.8 Data Link Encryption Support 223g37.8.1 MAC Messages . 223g37.8.2 Framing . 223g37.8.3 Multiple Transmit Channel Mode Operation and Packet Encryption . 223g38 Channel Bonding 223g38.1 Upstream and Downstream Common Aspects . 224g38.1.1 Service Flow Assignment . 224g38.1.2 CMTS Bonding and Topology Requirements 227g38.2 Downstream Channel Bonding. 228g38.2.1 Multiple Downstream Channel Overview 228g38.2.2 CMTS Downstream Bonding Operation . 229g38.2.3 Sequenced Downstream Packets. 229
