-
Data-Over-C
Ra
ISSUEDSPECIFICATIONNotice
This document is a cooperative effort undertaken at the
direction ofCable Television Laboratories, Inc. for the benefit of
the cable industry ingeneral. Neither CableLabs nor any member
company is responsible forany liability of any nature whatsoever
resulting from or arising out of useor reliance upon this
specification by any party. This document isfurnished on an AS IS
basis and neither CableLabs nor its membersprovides any
representation or warranty, express or implied, regardingits
accuracy, completeness, or fitness for a particular purpose.
Copyright 1999-2004 Cable Television Laboratories, Inc.All
rights reserved.able Service Interface SpecificationsDOCSIS 2.0
dio Frequency Interface Specification
CM-SP-RFIv2.0-I07-041210
golowSuperseded
-
CM-SP-RFIv2.0-I07-041210 Data-Over-Cable Service Interface
Specifications
ii
Document Status Sheet
Key to Document Status CodesWork in Process: An incomplete
document, designed to guide discussion and generate feedback, that
mayinclude several alternative requirements for consideration.
Draft: A document in specification format considered largely
complete, but lacking review by cable industry andvendors. Drafts
are susceptible to substantial change during the review
process.
Issued: A stable document, which has undergone rigorous member
and vendor review and is suitable for productdesign and
development, cross-vendor interoperability, and for certification
testing.
Closed: A static document, reviewed, tested, validated, and
closed to further engineering change requests to thespecification
through CableLabs.
Trademarks:
DOCSIS, eDOCSIS, PacketCable, CableHome, OpenCable, CableCARD,
CableOffice , and CableLabs are trademarks of Cable Television
Laboratories, Inc.
Document Control Number: CM-SP-RFIv2.0-I07-041210
Reference: Radio Frequency Interface Specification
Revision History: I01 First Issued Release, December 31, 2001I02
Second Issued Release, June 17, 2002I03 Third Issued Release,
December 18, 2002I04 Fourth Issued Release, July 30, 2003I05 Fifth
Issued Release, April 7, 2004I06 Sixth Issued Release, August 4,
2004I07 Seventh Issued Release, December 10, 2004
Date: December 10, 2004
Status Code: Work in Process
Draft Issued Closed
Distribution Restrictions: CableLabs only
CLReviewers
CLVendor
Public
-
Radio Frequency Interface Specification
CM-SP-RFIv2.0-I07-041210Table of Contents1 SCOPE AND
PURPOSE.................................................................................................................................1
1.1 SCOPE
................................................................................................................................................................11.2
REQUIREMENTS
.................................................................................................................................................21.3
BACKGROUND
...................................................................................................................................................2
1.3.1 Service Goals
..........................................................................................................................................21.3.2
Reference Architecture
...........................................................................................................................31.3.3
Categories of Interface Specification
.....................................................................................................51.3.4
Statement of Compatibility
.....................................................................................................................5
1.4 CONVENTIONS FOR THIS
SPECIFICATION...........................................................................................................5
2 REFERENCES (NORMATIVE/INFORMATIVE)
.....................................................................................7
3 GLOSSARY (INFORMATIVE)
..................................................................................................................11
4 FUNCTIONAL
ASSUMPTIONS.................................................................................................................23
4.1 BROADBAND ACCESS NETWORK
....................................................................................................................234.2
EQUIPMENT
ASSUMPTIONS..............................................................................................................................23
4.2.1 Frequency
Plan.....................................................................................................................................234.2.2
Compatibility with Other
Services........................................................................................................244.2.3
Fault Isolation Impact on Other
Users.................................................................................................244.2.4
Cable System Terminal Devices
...........................................................................................................24
4.3 RF CHANNEL ASSUMPTIONS
...........................................................................................................................244.3.1
Transmission Downstream
...................................................................................................................244.3.2
Transmission
Upstream........................................................................................................................25
4.4 TRANSMISSION LEVELS
...................................................................................................................................264.5
FREQUENCY INVERSION
..................................................................................................................................26
5 COMMUNICATION PROTOCOLS
..........................................................................................................27
5.1 PROTOCOL STACK
...........................................................................................................................................275.1.1
CM and CMTS as Hosts
.......................................................................................................................275.1.2
Data Forwarding Through the CM and CMTS
....................................................................................28
5.2 THE MAC FORWARDER
..................................................................................................................................315.2.1
Rules for Data-Link-Layer Forwarding
...............................................................................................32
5.3 NETWORK
LAYER............................................................................................................................................325.3.1
Requirements for IGMP
Management..................................................................................................33
5.4 ABOVE THE NETWORK LAYER
........................................................................................................................355.5
DATA LINK
LAYER..........................................................................................................................................35
5.5.1 LLC Sublayer
........................................................................................................................................365.5.2
Link-Layer Security Sublayer
...............................................................................................................365.5.3
MAC
Sublayer.......................................................................................................................................36
5.6 PHYSICAL LAYER
............................................................................................................................................365.6.1
Downstream Transmission Convergence Sublayer
..............................................................................36iii
-
CM-SP-RFIv2.0-I07-041210 Data-Over-Cable Service Interface
Specifications5.6.2 PMD
Sublayer......................................................................................................................................
37
6 PHYSICAL MEDIA DEPENDENT SUBLAYER SPECIFICATION
.................................................... 39
6.1 SCOPE
.............................................................................................................................................................
396.2 UPSTREAM
......................................................................................................................................................
39
6.2.1 Overview
..............................................................................................................................................
396.2.2 Signal Processing Requirements
.........................................................................................................
406.2.3 Modulation Formats
............................................................................................................................
446.2.4 R-S
Encode...........................................................................................................................................
446.2.5 R-S Frame Structure
............................................................................................................................
456.2.6 TDMA Byte
Interleaver........................................................................................................................
476.2.7 Scrambler
(Randomizer)......................................................................................................................
506.2.8 TCM
Encoder.......................................................................................................................................
506.2.9 Preamble Prepend
...............................................................................................................................
536.2.10 Modulation Rates
...............................................................................................................................
546.2.11 S-CDMA Framer and
Interleaver......................................................................................................
546.2.12 S-CDMA
Framer................................................................................................................................
616.2.13 Symbol Mapping
................................................................................................................................
646.2.14 S-CDMA Spreader
.............................................................................................................................
726.2.15 Transmit Pre-Equalizer
.....................................................................................................................
746.2.16 Spectral Shaping
................................................................................................................................
766.2.17 Relative Processing Delays
...............................................................................................................
776.2.18 Transmit Power
Requirements...........................................................................................................
786.2.19 Burst Profiles
.....................................................................................................................................
836.2.20 Burst Timing Convention
...................................................................................................................
896.2.21 Fidelity Requirements
........................................................................................................................
906.2.22 Upstream Demodulator Input Power
Characteristics.......................................................................
986.2.23 Upstream Electrical Output from the CM
.........................................................................................
98
6.3 DOWNSTREAM
................................................................................................................................................
996.3.1 Downstream Protocol
..........................................................................................................................
996.3.2 Scalable Interleaving to Support Low
Latency....................................................................................
996.3.3 Downstream Frequency Plan
............................................................................................................
1006.3.4 CMTS Output Electrical
....................................................................................................................
1006.3.5 Downstream Electrical Input to
CM..................................................................................................
1016.3.6 CM BER Performance
.......................................................................................................................
1016.3.7 CMTS Timestamp Jitter
.....................................................................................................................
1026.3.8 CMTS Clock
Generation....................................................................................................................
1046.3.9 CMTS Downstream Symbol Clock Jitter for Synchronous
Operation .............................................. 1056.3.10
CMTS Downstream Symbol Clock Drift for Synchronous Operation
............................................. 105
7 DOWNSTREAM TRANSMISSION CONVERGENCE SUBLAYER
................................................. 107
7.1 INTRODUCTION
.............................................................................................................................................
1077.2 MPEG PACKET
FORMAT..............................................................................................................................
107iv
-
Radio Frequency Interface Specification
CM-SP-RFIv2.0-I07-0412107.3 MPEG HEADER FOR DOCSIS DATA-OVER-CABLE
.....................................................................................1087.4
MPEG PAYLOAD FOR DOCSIS
DATA-OVER-CABLE...................................................................................108
7.4.1
stuff_byte.............................................................................................................................................1087.4.2
pointer_field........................................................................................................................................108
7.5 INTERACTION WITH THE MAC
SUBLAYER....................................................................................................1097.6
INTERACTION WITH THE PHYSICAL
LAYER...................................................................................................1107.7
MPEG HEADER SYNCHRONIZATION AND RECOVERY
..................................................................................110
8 MEDIA ACCESS CONTROL
SPECIFICATION...................................................................................111
8.1 INTRODUCTION
..............................................................................................................................................1118.1.1
Overview.............................................................................................................................................1118.1.2
Definitions
..........................................................................................................................................1118.1.3
Future Use
..........................................................................................................................................114
8.2 MAC FRAME FORMATS
................................................................................................................................1148.2.1
Generic MAC Frame Format
.............................................................................................................1148.2.2
Packet-Based MAC
Frames................................................................................................................1188.2.3
ATM Cell MAC Frames
......................................................................................................................1198.2.4
Reserved PDU MAC
Frames..............................................................................................................1198.2.5
MAC-Specific Headers
.......................................................................................................................1208.2.6
Extended MAC Headers
.....................................................................................................................1268.2.7
Fragmented MAC Frames
..................................................................................................................1308.2.8
Error-Handling...................................................................................................................................132
8.3 MAC MANAGEMENT MESSAGES
..................................................................................................................1338.3.1
MAC Management Message Header
..................................................................................................1338.3.2
Time Synchronization (SYNC)
............................................................................................................1368.3.3
Upstream Channel Descriptor
(UCD)................................................................................................1368.3.4
Upstream Bandwidth Allocation Map (MAP)
....................................................................................1458.3.5
Ranging Request (RNG-REQ)
............................................................................................................1478.3.6
Ranging Response
(RNG-RSP)...........................................................................................................1498.3.7
Registration Request (REG-REQ)
......................................................................................................1548.3.8
Registration Response
(REG-RSP).....................................................................................................1558.3.9
Registration Acknowledge
(REG-ACK)..............................................................................................1588.3.10
Upstream Channel Change Request
(UCC-REQ)............................................................................1608.3.11
Upstream Channel Change Response (UCC-RSP)
..........................................................................1608.3.12
Dynamic Service Addition Request (DSA-REQ)
..........................................................................1618.3.13
Dynamic Service Addition Response (DSA-RSP)
........................................................................1638.3.14
Dynamic Service Addition Acknowledge (DSA-ACK)
.................................................................1658.3.15
Dynamic Service Change Request (DSC-REQ)
...........................................................................1668.3.16
Dynamic Service Change Response
(DSC-RSP)..........................................................................1678.3.17
Dynamic Service Change Acknowledge (DSC-ACK)
..................................................................1698.3.18
Dynamic Service Deletion Request
(DSD-REQ)..........................................................................1708.3.19
Dynamic Service Deletion Response
(DSD-RSP)..........................................................................1718.3.20
Dynamic Channel Change Request (DCC-REQ)
..........................................................................171v
-
CM-SP-RFIv2.0-I07-041210 Data-Over-Cable Service Interface
Specifications8.3.21 Dynamic Channel Change Response
(DCC-RSP)........................................................................
1778.3.22 Dynamic Channel Change Acknowledge
(DCC-ACK).................................................................
1798.3.23 Device Class Identification Request
(DCI-REQ).............................................................................
1818.3.24 Device Class Identification Response (DCI-RSP)
...........................................................................
1818.3.25 Upstream Transmitter Disable (UP-DIS) MAC Management
Message ......................................... 1828.3.26 Initial
Ranging Request
(INIT-RNG-REQ)......................................................................................
1848.3.27 Test Request (TST-REQ)
..................................................................................................................
185
9 MEDIA ACCESS CONTROL PROTOCOL
OPERATION..................................................................
189
9.1 UPSTREAM BANDWIDTH
ALLOCATION.........................................................................................................
1899.1.1 The Allocation MAP MAC Management Message
............................................................................
1909.1.2 Information
Elements.........................................................................................................................
1909.1.3 Requests
.............................................................................................................................................
1939.1.4 Information Element Feature Usage Summary
.................................................................................
1949.1.5 Map Transmission and Timing
..........................................................................................................
1949.1.6 Protocol Example
..............................................................................................................................
1959.1.7 MAP Generation Example - Two Logical Upstreams
.......................................................................
196
9.2 SUPPORT FOR MULTIPLE
CHANNELS............................................................................................................
1979.3 TIMING AND
SYNCHRONIZATION..................................................................................................................
197
9.3.1 Global Timing Reference
...................................................................................................................
1989.3.2 CM Channel
Acquisition....................................................................................................................
1989.3.3
Ranging..............................................................................................................................................
1999.3.4 Timing Units and
Relationships.........................................................................................................
200
9.4 UPSTREAM TRANSMISSION AND CONTENTION RESOLUTION
.......................................................................
2019.4.1 Contention Resolution Overview
.......................................................................................................
2029.4.2 Transmit
Opportunities......................................................................................................................
2039.4.3 CM Bandwidth Utilization
.................................................................................................................
204
9.5 DATA LINK ENCRYPTION
SUPPORT..............................................................................................................
2049.5.1 MAC Messages
..................................................................................................................................
2049.5.2 Framing
.............................................................................................................................................
204
10 QUALITY OF SERVICE AND
FRAGMENTATION..........................................................................
20510.1 THEORY OF OPERATION
.............................................................................................................................
205
10.1.1
Concepts...........................................................................................................................................
20610.1.2 Object
Model....................................................................................................................................
21010.1.3 Service Classes
................................................................................................................................
21110.1.4 Authorization
...................................................................................................................................
21210.1.5 Types of Service Flows
....................................................................................................................
21310.1.6 Service Flows and
Classifiers..........................................................................................................
21510.1.7 General Operation
...........................................................................................................................
216
10.2 UPSTREAM SERVICE FLOW SCHEDULING SERVICES
..................................................................................
21910.2.1 Unsolicited Grant
Service................................................................................................................
22010.2.2 Real-Time Polling Service
...............................................................................................................
221vi
-
Radio Frequency Interface Specification
CM-SP-RFIv2.0-I07-04121010.2.3 Unsolicited Grant Service with
Activity
Detection...........................................................................22110.2.4
Non-Real-Time Polling Service
........................................................................................................22210.2.5
Best Effort Service
............................................................................................................................22210.2.6
Other
Services...................................................................................................................................22210.2.7
Parameter Applicability for Upstream Service
Scheduling..............................................................22310.2.8
CM Transmit Behavior
.....................................................................................................................223
10.3 FRAGMENTATION
........................................................................................................................................22410.3.1
CM Fragmentation
Support..............................................................................................................22410.3.2
CMTS Fragmentation Support
.........................................................................................................22710.3.3
Fragmentation Example
...................................................................................................................228
10.4 PAYLOAD HEADER
SUPPRESSION................................................................................................................23210.4.1
Overview...........................................................................................................................................23210.4.2
Example Applications
.......................................................................................................................23310.4.3
Operation..........................................................................................................................................23310.4.4
Signaling
...........................................................................................................................................23510.4.5
Payload Header Suppression
Examples...........................................................................................236
11 CABLE MODEM - CMTS
INTERACTION.........................................................................................239
11.1 CMTS
INITIALIZATION................................................................................................................................23911.2
CABLE MODEM
INITIALIZATION..................................................................................................................239
11.2.1 Scanning and Synchronization to
Downstream................................................................................24111.2.2
Obtain Upstream
Parameters...........................................................................................................24211.2.3
Message Flows During Scanning and Upstream Parameter Acquisition
........................................24511.2.4 Ranging and
Automatic
Adjustments................................................................................................24611.2.5
Device Class
Identification...............................................................................................................25011.2.6
Establish IP Connectivity
.................................................................................................................25011.2.7
Establish Time of
Day.......................................................................................................................25111.2.8
Transfer Operational Parameters
....................................................................................................25211.2.9
Registration
......................................................................................................................................25311.2.10
Baseline Privacy Initialization
.......................................................................................................25811.2.11
Service IDs During CM
Initialization.............................................................................................25911.2.12
Multiple-Channel Support
..............................................................................................................259
11.3 STANDARD
OPERATION...............................................................................................................................25911.3.1
Periodic Signal Level
Adjustment.....................................................................................................25911.3.2
Changing Upstream Channel Descriptor Message Parameters
......................................................26211.3.3
Changing Upstream
Channels..........................................................................................................263
11.4 DYNAMIC
SERVICE......................................................................................................................................26711.4.1
Dynamic Service Flow State
Transitions..........................................................................................26811.4.2
Dynamic Service Addition
................................................................................................................27611.4.3
Dynamic Service
Change..................................................................................................................28711.4.4
Dynamic Service Deletion
................................................................................................................29811.4.5
Dynamically Changing Downstream and/or Upstream Channels
...................................................304
11.5 FAULT DETECTION AND RECOVERY
...........................................................................................................330vii
-
CM-SP-RFIv2.0-I07-041210 Data-Over-Cable Service Interface
Specifications11.5.1 Prevention of Unauthorized
Transmissions.....................................................................................
330
12 SUPPORTING FUTURE NEW CABLE MODEM
CAPABILITIES.................................................
331
12.1 DOWNLOADING CABLE MODEM OPERATING SOFTWARE
..........................................................................
331
ANNEX A WELL-KNOWN
ADDRESSES.................................................................................................
333
A.1 MAC
ADDRESSES........................................................................................................................................
333A.2 MAC SERVICE IDS
......................................................................................................................................
333
A.2.1 All CMs and No CM Service
IDs.......................................................................................................
333A.2.2 Well-Known Multicast Service IDs
...................................................................................................
333A.2.3 Priority Request Service IDs
.............................................................................................................
334
A.3 MPEG PID
..................................................................................................................................................
334
ANNEX B PARAMETERS AND
CONSTANTS........................................................................................
335
ANNEX C COMMON RADIO FREQUENCY INTERFACE
ENCODINGS......................................... 339C.1 ENCODINGS
FOR CONFIGURATION AND MAC-LAYER MESSAGING
............................................................
339
C.1.1 Configuration File and Registration Settings
...................................................................................
339C.1.2 Configuration-File-Specific
Settings.................................................................................................
352C.1.3 Registration-Request/Response-Specific Encodings
.........................................................................
357C.1.4 Dynamic-Service-Message-Specific Encodings
................................................................................
361
C.2 QUALITY-OF-SERVICE-RELATED ENCODINGS
.............................................................................................
362C.2.1 Packet Classification
Encodings.......................................................................................................
362C.2.2 Service Flow Encodings
....................................................................................................................
370
C.3 ENCODINGS FOR OTHER INTERFACES
..........................................................................................................
387C.3.1 Telephone Settings Option
................................................................................................................
387C.3.2 Baseline Privacy Configuration Settings Option
..............................................................................
387
C.4 CONFIRMATION
CODE..................................................................................................................................
387C.4.1 Confirmation Codes for Dynamic Channel Change
.........................................................................
389C.4.2 Confirmation Codes for Major Errors
..............................................................................................
389
ANNEX D CM CONFIGURATION INTERFACE
SPECIFICATION...................................................
391
D.1 CM IP ADDRESSING
....................................................................................................................................
391D.1.1 DHCP Fields Used by the
CM..........................................................................................................
391
D.2 CM
CONFIGURATION...................................................................................................................................
392D.2.1 CM Binary Configuration File
Format.............................................................................................
392D.2.2 Configuration File
Settings...............................................................................................................
393D.2.3 Configuration File Creation
.............................................................................................................
394
D.3 CONFIGURATION VERIFICATION
..................................................................................................................
396D.3.1 CMTS MIC Calculation
....................................................................................................................
396
ANNEX E THE DATA-OVER-CABLE SPANNING TREE PROTOCOL
............................................ 399
E.1 BACKGROUND
..............................................................................................................................................
399E.2 PUBLIC SPANNING TREE
..............................................................................................................................
399viii
-
Radio Frequency Interface Specification
CM-SP-RFIv2.0-I07-041210E.3 PUBLIC SPANNING TREE PROTOCOL
DETAILS..............................................................................................400E.4
SPANNING TREE PARAMETERS AND DEFAULTS
...........................................................................................401
E.4.1 Path Cost
............................................................................................................................................401E.4.2
Bridge Priority
...................................................................................................................................402
ANNEX F EUROPEAN SPECIFICATION
ADDITIONS.........................................................................403
F.1 SCOPE AND PURPOSE
....................................................................................................................................403F.2
REFERENCES..................................................................................................................................................403F.3
GLOSSARY.....................................................................................................................................................403F.4
FUNCTIONAL
ASSUMPTIONS..........................................................................................................................403
F.4.1 Broadband access
network.................................................................................................................403F.4.2
Equipment Assumptions
.....................................................................................................................404F.4.3
RF Channel Assumptions
...................................................................................................................404F.4.4
Transmission Levels
...........................................................................................................................406F.4.5
Frequency
Inversion...........................................................................................................................406
F.5 COMMUNICATION
PROTOCOLS......................................................................................................................407F.6
PHYSICAL MEDIA DEPENDENT SUBLAYER SPECIFICATION
..........................................................................407
F.6.1 Scope
..................................................................................................................................................407F.6.2
Upstream
............................................................................................................................................407F.6.3
Downstream
.......................................................................................................................................421
F.7 DOWNSTREAM TRANSMISSION CONVERGENCE SUBLAYER
...........................................................................427F.7.1
Introduction........................................................................................................................................427F.7.2
MPEG Packet format
.........................................................................................................................428F.7.3
MPEG Header for Euro-DOCSIS
Data-Over-Cable.........................................................................428F.7.4
MPEG Payload for Euro-DOCSIS Data-Over-Cable
.......................................................................428F.7.5
Interaction with the MAC sublayer
....................................................................................................429F.7.6
Interaction with the Physical layer
....................................................................................................429F.7.7
MPEG Header synchronization and recovery
...................................................................................429
F.8 MEDIA ACCESS CONTROL
SPECIFICATION....................................................................................................429F.8.1
Introduction........................................................................................................................................429F.8.2
MAC Frame Formats
.........................................................................................................................429F.8.3
MAC Management Messages
.............................................................................................................429
ANNEX G DOCSIS 2.0 AND 1.0/1.1
INTEROPERABILITY...................................................................431
G.1 GENERAL INTEROPERABILITY ISSUES
..........................................................................................................431G.1.1
Provisioning.......................................................................................................................................431G.1.2
Registration........................................................................................................................................432G.1.3
Dynamic Service
Establishment.........................................................................................................433G.1.4
Fragmentation
...................................................................................................................................434G.1.5
Multicast
Support...............................................................................................................................434G.1.6
Changing Upstream
Channels...........................................................................................................434
G.2 HYBRID
DEVICES..........................................................................................................................................434G.3
DOCSIS 2.0 TDMA
INTEROPERABILITY.....................................................................................................435ix
-
CM-SP-RFIv2.0-I07-041210 Data-Over-Cable Service Interface
SpecificationsG.3.1 Mixed-mode operation with TDMA
..................................................................................................
435G.3.2 Interoperability & Performance
.......................................................................................................
436
G.4 DOCSIS 2.0 S-CDMA INTEROPERABILITY
................................................................................................
436G.4.1 Mixed mode operation with
S-CDMA...............................................................................................
436G.4.2 Interoperability & Performance
.......................................................................................................
436
ANNEX H THE DOCSIS MAC/PHY INTERFACE (DMPI)
...................................................................
437H.1 SCOPE
..........................................................................................................................................................
437H.2
CONVENTIONS..............................................................................................................................................
437
H.2.1 Terminology
......................................................................................................................................
437H.2.2 Ordering of Bits and
Bytes................................................................................................................
437H.2.3 Signal Naming
Conventions..............................................................................................................
437H.2.4 Active Clock Edge
.............................................................................................................................
437H.2.5 Timing
Specifications........................................................................................................................
438
H.3 OVERVIEW
...................................................................................................................................................
438H.3.1 Downstream Data
.............................................................................................................................
441H.3.2 Upstream
Data..................................................................................................................................
441H.3.3 Upstream Control
.............................................................................................................................
441H.3.4 SPI
Bus..............................................................................................................................................
441
H.4
SIGNALS.......................................................................................................................................................
442H.4.1 Downstream Data
.............................................................................................................................
442H.4.2 Upstream
Data..................................................................................................................................
442H.4.3 Upstream Control
.............................................................................................................................
443H.4.4 SPI
Bus..............................................................................................................................................
443H.4.5
Parity.................................................................................................................................................
444H.4.6
Interrupts...........................................................................................................................................
444
H.5 PROTOCOL
...................................................................................................................................................
445H.5.1 Downstream Data (ITU-T Recommendations J.83 Annex A)
...........................................................
445H.5.2 Downstream Data (ITU-T Recommendations J.83 Annex B)
...........................................................
446H.5.3 Upstream
Data..................................................................................................................................
446H.5.4 Upstream Control
.............................................................................................................................
447H.5.5 SPI
Bus..............................................................................................................................................
449
H.6 ELECTRICAL
SPECIFICATIONS......................................................................................................................
450H.6.1 DC
Specifications..............................................................................................................................
450
H.7 TIMING
SPECIFICATIONS..............................................................................................................................
451H.7.1 Downstream Data
.............................................................................................................................
451H.7.2 Upstream
Data..................................................................................................................................
451H.7.3 Upstream Control
.............................................................................................................................
451H.7.4 SPI
Bus..............................................................................................................................................
452
H.8 DATA FORMAT AND USAGE
........................................................................................................................
452H.8.1 Downstream Data
.............................................................................................................................
452H.8.2 Upstream
Data..................................................................................................................................
452H.8.3 Upstream Control
.............................................................................................................................
458x
-
Radio Frequency Interface Specification
CM-SP-RFIv2.0-I07-041210H.8.4 SPI
Bus...............................................................................................................................................460
APPENDIX I MAC SERVICE
DEFINITION.............................................................................................461
I.1 MAC SERVICE
OVERVIEW.............................................................................................................................461I.1.1
MAC Service Parameters
....................................................................................................................462
I.2 MAC DATA SERVICE INTERFACE
..................................................................................................................463I.2.1
MAC_DATA.request............................................................................................................................463I.2.2
MAC_DATA.indicate...........................................................................................................................464I.2.3
MAC_GRANT_SYNCHRONIZE.indicate
...........................................................................................464I.2.4
MAC_CMTS_MASTER_CLOCK_SYNCHRONIZE.indicate
..............................................................465
I.3 MAC CONTROL SERVICE
INTERFACE............................................................................................................465I.3.1
MAC_REGISTRATION_RESPONSE.indicate
....................................................................................465I.3.2
MAC_CREATE_SERVICE_FLOW.request
........................................................................................465I.3.3
MAC_CREATE_SERVICE_FLOW.response
......................................................................................466I.3.4
MAC_CREATE_SERVICE_FLOW.indicate
.......................................................................................466I.3.5
MAC_DELETE_SERVICE_FLOW.request
........................................................................................466I.3.6
MAC_DELETE_SERVICE_FLOW.response
......................................................................................467I.3.7
MAC_DELETE_SERVICE_FLOW.indicate
.......................................................................................467I.3.8
MAC_CHANGE_SERVICE_FLOW.request
.......................................................................................467I.3.9
MAC_CHANGE_SERVICE_FLOW.response.....................................................................................467I.3.10
MAC_CHANGE_SERVICE_FLOW.indicate
....................................................................................468
I.4 MAC SERVICE USAGE
SCENARIOS................................................................................................................468I.4.1
Transmission of PDUs from Upper Layer Service to MAC DATA Service
........................................468I.4.2 Reception of PDUs
to Upper Layer Service from MAC DATA
Service..............................................468I.4.3
Sample Sequence of MAC Control and MAC Data Services
..............................................................469
APPENDIX II EXAMPLE PREAMBLE SEQUENCE
..............................................................................471II.1
INTRODUCTION
.............................................................................................................................................471II.2
EXAMPLE PREAMBLE
SEQUENCE..................................................................................................................471
APPENDIX III MULTIPLE UPSTREAM CHANNELS
...........................................................................473
III.1 SINGLE DOWNSTREAM AND SINGLE UPSTREAM PER CABLE SEGMENT
.....................................................473III.2
MULTIPLE DOWNSTREAMS AND MULTIPLE UPSTREAMS PER CABLE SEGMENT
........................................475
III.2.1
Topologies.........................................................................................................................................475III.2.2
Normal
Operation.............................................................................................................................477III.2.3
Initial Ranging
..................................................................................................................................478III.2.4
Dynamic Channel
Change................................................................................................................478
APPENDIX IV DOCSIS TRANSMISSION AND CONTENTION
RESOLUTION...............................479
IV.1
INTRODUCTION............................................................................................................................................479IV.2
VARIABLE DEFINITIONS
..............................................................................................................................480IV.3
STATE EXAMPLES
.......................................................................................................................................480
IV.3.1 Idle Waiting for a Packet to Transmit
..........................................................................................480IV.3.2
Data Ack Pending Waiting for Data Ack only
.............................................................................481xi
-
CM-SP-RFIv2.0-I07-041210 Data-Over-Cable Service Interface
SpecificationsIV.3.3 Grant Pending Waiting for a Grant
............................................................................................
481IV.3.4 Deferring Determine Proper Transmission Timing &
Transmit................................................. 481
IV.4 FUNCTION EXAMPLES
................................................................................................................................
482IV.4.1 CalcDefer() Determine Defer Amount
........................................................................................
482IV.4.2 UtilizeGrant() Determine Best Use of a
Grant............................................................................
482IV.4.3 Retry()
..............................................................................................................................................
483
APPENDIX V IGMP EXAMPLE
................................................................................................................
485
V.1 EVENTS
........................................................................................................................................................
485V.2 ACTIONS
......................................................................................................................................................
486
APPENDIX VI UNSOLICITED GRANT SERVICES
..............................................................................
487
VI.1 UNSOLICITED GRANT SERVICE
(UGS).......................................................................................................
487VI.1.1
Introduction......................................................................................................................................
487VI.1.2 Configuration Parameters
...............................................................................................................
487VI.1.3 Operation
.........................................................................................................................................
487VI.1.4 Jitter
.................................................................................................................................................
488VI.1.5 Synchronization Issues
.....................................................................................................................
488
VI.2 UNSOLICITED GRANT SERVICE WITH ACTIVITY DETECTION (UGS-AD)
.................................................. 489VI.2.1
Introduction......................................................................................................................................
489VI.2.2 MAC Configuration Parameters
......................................................................................................
489VI.2.3 Operation
.........................................................................................................................................
489VI.2.4
Example............................................................................................................................................
490VI.2.5 Talk Spurt Grant
Burst.....................................................................................................................
491VI.2.6 Admission
Considerations................................................................................................................
492
APPENDIX VII S-CDMA FRAMING
........................................................................................................
493
VII.1 CODED SUBSYMBOL
NUMBERING.............................................................................................................
493VII.2 UNCODED SUBSYMBOL NUMBERING
........................................................................................................
494VII.3 FRAMER OUTPUT NUMBERING
.................................................................................................................
494VII.4 COMMENTS
...............................................................................................................................................
494
APPENDIX VIII AMBIENT TEMPERATURE AND WIND LOADING EFFECTS
........................... 495
VIII.1 SYNCHRONIZATION TOLERANCES TO PLANT DELAY VARIATIONS
......................................................... 495VIII.2
CHANGE IN PROPAGATION DELAY DUE TO TEMPERATURE CHANGES
................................................... 496
VIII.2.1 Fiber Delay Changes Due to Temperature
...................................................................................
496VIII.2.2 Coaxial Cable Delay Changes Due to
Temperature.....................................................................
497VIII.2.3 Delay Change Due to
Wind...........................................................................................................
497
VIII.3 REFERENCES
............................................................................................................................................
497
APPENDIX IX ACKNOWLEDGMENTS
..................................................................................................
499
APPENDIX X REVISIONS
..........................................................................................................................
501
X.1 ECNS INCLUDED IN SP-RFIV2.0-I02-020617
.............................................................................................
501xii
-
Radio Frequency Interface Specification
CM-SP-RFIv2.0-I07-041210X.2 ECNS INCLUDED IN
SP-RFIV2.0-I03-021218..............................................................................................502X.3
ECNS INCLUDED IN
SP-RFIV2.0-I04-030730..............................................................................................503X.4
ECNS INCLUDED IN
SP-RFIV2.0-I05-040407..............................................................................................504X.5
ECNS INCLUDED IN CM-SP-RFIV2.0-I06-040804
......................................................................................504X.6
ECNS INCLUDED IN CM-SP-RFIV2.0-I07-041210
......................................................................................505xiii
-
CM-SP-RFIv2.0-I07-041210 Data-Over-Cable Service Interface
SpecificationsThis page intentionally left blank.xiv
-
Radio Frequency Interface Specification
CM-SP-RFIv2.0-I07-041210List of FiguresFIGURE 1-1 TRANSPARENT IP
TRAFFIC THROUGH THE DATA-OVER-CABLE SYSTEM
..................................2FIGURE 1-2 DATA-OVER-CABLE
REFERENCE ARCHITECTURE
......................................................................4FIGURE
5-1 PROTOCOL STACK ON THE RF
INTERFACE................................................................................27FIGURE
5-2 DATA FORWARDING THROUGH THE CM AND
CMTS...............................................................28FIGURE
5-3 EXAMPLE CONDITION FOR NETWORK LOOPS
...........................................................................29FIGURE
5-4 MAC FORWARDER
....................................................................................................................31FIGURE
6-1 UPSTREAM SIGNAL-PROCESSING
SEQUENCE..............................................................................41FIGURE
6-2 TDMA UPSTREAM TRANSMISSION PROCESSING
......................................................................42FIGURE
6-3 S-CDMA UPSTREAM TRANSMISSION PROCESSING
..................................................................43FIGURE
6-4 EXAMPLE FRAME STRUCTURES WITH FLEXIBLE BURST LENGTH
MODE..................................45FIGURE 6-5 BYTE INTERLEAVER
OPERATION...............................................................................................48FIGURE
6-6 INTERLEAVER OPERATION FOR LAST INTERLEAVER BLOCK
(WITH SHORTENED LAST CODEWORD)
.......................................................................................48FIGURE
6-7 SCRAMBLER
STRUCTURE...........................................................................................................50FIGURE
6-8 CONVOLUTIONAL ENCODER
......................................................................................................51FIGURE
6-9 REPETITIVE PATTERNS OF BYTE MAPPING TO SYMBOL MAP BITS FOR
TCM.............................52FIGURE 6-10 EXAMPLE BYTE TO BIT
ASSIGNMENT FOR 64 QAM
..................................................................52FIGURE
6-11 EXAMPLE OF RETURN TO ZERO BITS FOLLOWED BY 0
...........................................................53FIGURE
6-12 TIMESTAMP
SNAPSHOT..............................................................................................................55FIGURE
6-13 MINI-SLOT MAPPING WITH TWO CODES PER MINI-SLOT, 128 ACTIVE
CODES.........................57FIGURE 6-14 MINI-SLOT MAPPING WITH
THREE CODES PER MINI-SLOT, 126 ACTIVE
CODES......................58FIGURE 6-15 S-CDMA AND SPREADER-OFF
INTERVALS
...............................................................................60FIGURE
6-16 SUBFRAME STRUCTURE
.............................................................................................................62FIGURE
6-17 SYMBOL NUMBERING WITHOUT
TCM......................................................................................64FIGURE
6-18 SYMBOL CONSTELLATIONS
.......................................................................................................67FIGURE
6-19 QPSK GRAY AND DIFFERENTIAL SYMBOL
MAPPING...............................................................68FIGURE
6-20 8QAM SYMBOL MAPPING
........................................................................................................68FIGURE
6-21 16QAM SYMBOL MAPPING
......................................................................................................69FIGURE
6-22 32QAM SYMBOL MAPPING
......................................................................................................69FIGURE
6-23 64QAM SYMBOL MAPPING
......................................................................................................70FIGURE
6-24 QPSK AND 8QAM TCM SYMBOL
MAPPING............................................................................70FIGURE
6-25 16QAM AND 32QAM TCM SYMBOL
MAPPING.......................................................................71FIGURE
6-26 64QAM AND 128QAM TCM SYMBOL
MAPPING.....................................................................71FIGURE
6-27 CODE HOPPING RANDOM NUMBER GENERATOR
......................................................................74FIGURE
6-28 TRANSMIT PRE-EQUALIZER
STRUCTURE...................................................................................75FIGURE
6-29 NOMINAL TDMA BURST TIMING
.............................................................................................89FIGURE
6-30 WORST-CASE TDMA BURST TIMING
.......................................................................................90FIGURE
7-1 EXAMPLE OF INTERLEAVING MPEG PACKETS IN DOWNSTREAM
..........................................107FIGURE 7-2 FORMAT OF
AN MPEG PACKET
..............................................................................................107FIGURE
7-3 PACKET FORMAT WHERE A MAC FRAME IMMEDIATELY FOLLOWS THE
POINTER_FIELD.....109FIGURE 7-4 PACKET FORMAT WITH MAC FRAME
PRECEDED BY STUFFING BYTES
.................................109xv
-
CM-SP-RFIv2.0-I07-041210 Data-Over-Cable Service Interface
SpecificationsFIGURE 7-5 PACKET FORMAT SHOWING MULTIPLE MAC FRAMES
IN A SINGLE PACKET ....................... 109FIGURE 7-6 PACKET
FORMAT WHERE A MAC FRAME SPANS MULTIPLE
PACKETS................................. 110FIGURE 8-1 GENERIC MAC
FRAME FORMAT
............................................................................................
114FIGURE 8-2 UPSTREAM MAC/PMD CONVERGENCE
.................................................................................
115FIGURE 8-3 MAC HEADER FORMAT
.........................................................................................................
116FIGURE 8-4 ETHERNET/802.3 PACKET PDU FORMAT
...............................................................................
118FIGURE 8-5 RESERVED PDU FORMAT
.......................................................................................................
120FIGURE 8-6 TIMING MAC HEADER
...........................................................................................................
121FIGURE 8-7 MANAGEMENT MAC HEADER
...............................................................................................
122FIGURE 8-8 REQUEST FRAME
FORMAT......................................................................................................
123FIGURE 8-9 FRAGMENTATION MAC HEADER FORMAT
............................................................................
124FIGURE 8-10 CONCATENATION OF MULTIPLE MAC FRAMES
.....................................................................
125FIGURE 8-11 CONCATENATION MAC HEADER
FORMAT.............................................................................
125FIGURE 8-12 EXTENDED MAC FORMAT
.....................................................................................................
126FIGURE 8-13 FRAGMENTATION DETAILS
.....................................................................................................
131FIGURE 8-14 MAC HEADER AND MAC MANAGEMENT MESSAGE HEADER
FIELDS.................................. 134FIGURE 8-15 FORMAT OF
PACKET PDU FOLLOWING THE TIMING
HEADER............................................... 136FIGURE
8-16 UPSTREAM CHANNEL DESCRIPTOR
........................................................................................
137FIGURE 8-17 TOP-LEVEL ENCODING FOR BURST DESCRIPTORS
.................................................................
140FIGURE 8-18 EXAMPLE OF UCD ENCODED TLV
DATA..............................................................................
144FIGURE 8-19 MAP FORMAT
........................................................................................................................
145FIGURE 8-20 MAP INFORMATION ELEMENT STRUCTURE
...........................................................................
146FIGURE 8-21 PACKET PDU FOLLOWING THE TIMING
HEADER...................................................................
148FIGURE 8-22 RANGING RESPONSE
...............................................................................................................
149FIGURE 8-23 GENERALIZED DECISION FEEDBACK EQUALIZATION
COEFFICIENTS ..................................... 152FIGURE 8-24
EXAMPLE OF TLV DATA
........................................................................................................
153FIGURE 8-25 REGISTRATION REQUEST
........................................................................................................
154FIGURE 8-26 REGISTRATION RESPONSE
FORMAT........................................................................................
156FIGURE 8-27 REGISTRATION ACKNOWLEDGMENT
......................................................................................
159FIGURE 8-28 UPSTREAM CHANNEL CHANGE
REQUEST...............................................................................
160FIGURE 8-29 UPSTREAM CHANNEL CHANGE RESPONSE
.............................................................................
161FIGURE 8-30 DYNAMIC SERVICE ADDITION REQUEST
...........................................................................
161FIGURE 8-31 DYNAMIC SERVICE ADDITION RESPONSE
.........................................................................
163FIGURE 8-32 DYNAMIC SERVICE ADDITION
ACKNOWLEDGE.................................................................
165FIGURE 8-33 DYNAMIC SERVICE CHANGE REQUEST
.............................................................................
166FIGURE 8-34 DYNAMIC SERVICE CHANGE
RESPONSE............................................................................
167FIGURE 8-35 DYNAMIC SERVICE CHANGE
ACKNOWLEDGE...................................................................
169FIGURE 8-36 DYNAMIC SERVICE DELETION
REQUEST...........................................................................
170FIGURE 8-37 DYNAMIC SERVICE DELETION RESPONSE
.........................................................................
171FIGURE 8-38 DYNAMIC CHANNEL CHANGE REQUEST
................................................................................
171FIGURE 8-39 DYNAMIC CHANNEL CHANGE
RESPONSE...............................................................................
178FIGURE 8-40 DYNAMIC CHANNEL CHANGE
ACKNOWLEDGE......................................................................
180FIGURE 8-41 DEVICE CLASS IDENTIFICATION REQUEST
.............................................................................
181xvi
-
Radio Frequency Interface Specification
CM-SP-RFIv2.0-I07-041210FIGURE 8-42 DEVICE CLASS IDENTIFICATION
RESPONSE
............................................................................182FIGURE
8-43 UP-DIS MESSAGE
FORMAT......................................................................................................183FIGURE
8-44 PACKET PDU FOLLOWING THE TIMING HEADER
...................................................................184FIGURE
8-45 TEST
REQUEST.........................................................................................................................186FIGURE
9-1 ALLOCATION
MAP...................................................................................................................189FIGURE
9-2 PROTOCOL
EXAMPLE...............................................................................................................195FIGURE
9-3 LOGICAL S-CDMA TDMA
CHANNELS...................................................................................196FIGURE
10-1 PROVISIONED AUTHORIZATION MODEL
ENVELOPES...........................................................207FIGURE
10-2 DYNAMIC AUTHORIZATION MODEL ENVELOPES
................................................................208FIGURE
10-3 CLASSIFICATION WITHIN THE MAC LAYER
............................................................................209FIGURE
10-4 THEORY OF OPERATION OBJECT MODEL
................................................................................211FIGURE
10-5 REGISTRATION MESSAGE
FLOW..............................................................................................216FIGURE
10-6 DYNAMIC SERVICE ADDITION MESSAGE FLOW CM INITIATED
........................................218FIGURE 10-7 DYNAMIC
SERVICE ADDITION MESSAGE FLOW CMTS INITIATED
...................................219FIGURE 10-8 CM FRAGMENTATION
FLOWCHART
........................................................................................226FIGURE
10-9 EXAMPLE OF FRAGMENTING A SINGLE PACKET
.....................................................................230FIGURE
10-10 FRAGMENTED CONCATENATED PACKET EXAMPLE
................................................................231FIGURE
10-11 PAYLOAD HEADER SUPPRESSION OPERATION
........................................................................234FIGURE
10-12 PAYLOAD HEADER SUPPRESSION WITH MASKING
..................................................................235FIGURE
10-13 PAYLOAD HEADER SUPPRESSION SIGNALING EXAMPLE
........................................................236FIGURE
10-14 UPSTREAM PAYLOAD HEADER SUPPRESSION
EXAMPLE.........................................................237FIGURE
10-15 DOWNSTREAM PAYLOAD HEADER SUPPRESSION
EXAMPLE...................................................238FIGURE
11-1 CM INITIALIZATION
OVERVIEW..............................................................................................240FIGURE
11-2 SDL NOTATION
.......................................................................................................................241FIGURE
11-3 OBTAINING UPSTREAM PARAMETERS
.....................................................................................244FIGURE
11-4 MESSAGE FLOWS DURING SCANNING AND UPSTREAM PARAMETER
ACQUISITION ...............245FIGURE 11-5 RANGING AND AUTOMATIC
ADJUSTMENTS
PROCEDURE........................................................246FIGURE
11-6 INITIAL RANGING -
CM...........................................................................................................247FIGURE
11-7 UNICAST INITIAL RANGING - CM
...........................................................................................248FIGURE
11-8 INITIAL RANGING - CMTS
......................................................................................................249FIGURE
11-9 DEVICE CLASS IDENTIFICATION
..............................................................................................250FIGURE
11-10 ESTABLISHING IP CONNECTIVITY
...........................................................................................251FIGURE
11-11 ESTABLISHING TIME OF DAY
..................................................................................................252FIGURE
11-12 REGISTRATION
CM.............................................................................................................254FIGURE
11-13 WAIT FOR REGISTRATION RESPONSE CM
.........................................................................255FIGURE
11-14 REGISTRATION
CMTS........................................................................................................257FIGURE
11-15 REGISTRATION ACKNOWLEDGMENT CMTS
.......................................................................258FIGURE
11-16 PERIODIC RANGING -
CMTS...................................................................................................261FIGURE
11-17 PERIODIC RANGING - CM
VIEW..............................................................................................262FIGURE
11-18 CHANGING UPSTREAM CHANNELS: CMTS
VIEW...................................................................264FIGURE
11-19 CHANGING UPSTREAM CHANNELS: CM VIEW PART
1...........................................................265FIGURE
11-20 CHANGING UPSTREAM CHANNELS: CM VIEW PART
2...........................................................266FIGURE
11-21 DYNAMIC SERVICE FLOW
OVERVIEW.....................................................................................267xvii
-
CM-SP-RFIv2.0-I07-041210 Data-Over-Cable Service Interface
SpecificationsFIGURE 11-22 DYNAMIC SERVICE FLOW STATE TRANSITION
DIAGRAM......................................................
270FIGURE 11-23 DSALOCALLY INITIATED TRANSACTION STATE TRANSITION
DIAGRAM .......................... 271FIGURE 11-24 DSAREMOTELY
INITIATED TRANSACTION STATE TRANSITION
DIAGRAM........................ 272FIGURE 11-25 DSCLOCALLY
INITIATED TRANSACTION STATE TRANSITION DIAGRAM
.......................... 273FIGURE 11-26 DSCREMOTELY INITIATED
TRANSACTION STATE TRANSITION DIAGRAM........................
274FIGURE 11-27 DSDLOCALLY INITIATED TRANSACTION STATE TRANSITION
DIAGRAM .......................... 275FIGURE 11-28 DYNAMIC DELETION
(DSD) - REMOTELY INITIATED TRANSACTION STATE
TRANSITION DIAGRAM
...........................................................................................................
276FIGURE 11-29 DYNAMIC SERVICE ADDITION INITIATED FROM CM
.............................................................
277FIGURE 11-30 DYNAMIC SERVICE ADDITION INITIATED FROM
CMTS.........................................................
278FIGURE 11-31 DSALOCALLY INITIATED TRANSACTION BEGIN STATE FLOW
DIAGRAM ......................... 279FIGURE 11-32 DSALOCALLY
INITIATED TRANSACTION DSA-RSP PENDING STATE FLOW DIAGRAM ...
280FIGURE 11-33 DSALOCALLY INITIATED TRANSACTION HOLDING STATE FLOW
DIAGRAM .................... 281FIGURE 11-34 DSALOCALLY INITIATED
TRANSACTION RETRIES EXHAUSTED STATE FLOW DIAGRAM . 282FIGURE 11-35
DSALOCALLY INITIATED TRANSACTION DELETING SERVICE FLOW STATE
FLOW
DIAGRAM
................................................................................................................................
283FIGURE 11-36 DSAREMOTELY INITIATED TRANSACTION BEGIN STATE FLOW
DIAGRAM....................... 284FIGURE 11-37 DSAREMOTELY
INITIATED TRANSACTION DSA-ACK PENDING STATE FLOW DIAGRAM 285FIGURE
11-38 DSAREMOTELY INITIATED TRANSACTION HOLDING DOWN STATE FLOW
DIAGRAM ...... 286FIGURE 11-39 DSAREMOTELY INITIATED TRANSACTION
DELETING SERVICE STATE FLOW DIAGRAM.. 287FIGURE 11-40 CM-INITIATED
DSC
...............................................................................................................
289FIGURE 11-41 CMTS-INITIATED
DSC...........................................................................................................
289FIGURE 11-42 DSCLOCALLY INITIATED TRANSACTION BEGIN STATE FLOW
DIAGRAM ......................... 290FIGURE 11-43 DSCLOCALLY
INITIATED TRANSACTION DSC-RSP PENDING STATE FLOW DIAGRAM....
291FIGURE 11-44 DSCLOCALLY INITIATED TRANSACTION HOLDING DOWN STATE
FLOW DIAGRAM ......... 292FIGURE 11-45 DSCLOCALLY INITIATED
TRANSACTION RETRIES EXHAUSTED STATE FLOW DIAGRAM . 293FIGURE 11-46
DSCLOCALLY INITIATED TRANSACTION DELETING SERVICE FLOW STATE
FLOW
DIAGRAM
................................................................................................................................
294FIGURE 11-47 DSCREMOTELY INITIATED TRANSACTION BEGIN STATE FLOW
DIAGRAM....................... 295FIGURE 11-48 DSCREMOTELY
INITIATED TRANSACTION DSC-ACK PENDING STATE FLOW DIAGRAM 296FIGURE
11-49 DSCREMOTELY INITIATED TRANSACTION HOLDING DOWN STATE FLOW
DIAGRAM ...... 297FIGURE 11-50 DSCREMOTELY INITIATED TRANSACTION
DELETING SERVICE FLOW STATE FLOW
DIAGRAM
................................................................................................................................
298FIGURE 11-51 DYNAMIC SERVICE DELETION INITIATED FROM CM
.............................................................
299FIGURE 11-52 DYNAMIC SERVICE DELETION INITIATED FROM
CMTS.........................................................
299FIGURE 11-53 DSDLOCALLY INITIATED TRANSACTION BEGIN STATE FLOW
DIAGRAM ......................... 300FIGURE 11-54 DSDLOCALLY
INITIATED TRANSACTION DSD-RSP PENDING STATE FLOW DIAGRAM ...
301FIGURE 11-55 DSDLOCALLY INITIATED TRANSACTION HOLDING DOWN STATE
FLOW DIAGRAM......... 302FIGURE 11-56 DSDREMOTELY INITIATED
TRANSACTION BEGIN STATE FLOW DIAGRAM.......................
303FIGURE 11-57 DSDREMOTELY INITIATED TRANSACTION HOLDING DOWN
STATE FLOW DIAGRAM ...... 304FIGURE 11-58 DYNAMICALLY CHANGING
CHANNELS: CMTS VIEW PART
1............................................... 311FIGURE 11-59
DYNAMICALLY CHANGING CHANNELS: CMTS VIEW PART
2............................................... 312FIGURE 11-60
DYNAMICALLY CHANGING CHANNELS: CMTS VIEW PART
3............................................... 313FIGURE 11-61
DYNAMICALLY CHANGING CHANNELS: CMTS VIEW PART
4............................................... 314xviii
-
Radio Frequency Interface Specification
CM-SP-RFIv2.0-I07-041210FIGURE 11-62 DYNAMICALLY CHANGING CHANNELS:
CM VIEW PART 1
....................................................315FIGURE 11-63
DYNAMICALLY CHANGING CHANNELS: CM VIEW PART 2
....................................................316FIGURE 11-64
DYNAMICALLY CHANGING CHANNELS: CM VIEW PART 3
....................................................317FIGURE 11-65
DYNAMICALLY CHANGING CHANNELS: CM VIEW PART 4
....................................................318FIGURE 11-66
DCC EXAMPLE OPERATIONAL FLOW
.....................................................................................321FIGURE
11-67 EXAMPLE COMBINING NETWORK 1
........................................................................................327FIGURE
11-68 EXAMPLE COMBINING NETWORK 2
........................................................................................329FIGURE
D-1 BINARY CONFIGURATION FILE FORMAT
.................................................................................393FIGURE
D-2 CREATE TLV ENTRIES FOR PARAMETERS REQUIRED BY THE
CM.........................................395FIGURE D-3 ADD CM MIC
.........................................................................................................................395FIGURE
D-4 ADD CMTS
MIC.....................................................................................................................395FIGURE
D-5 ADD END OF DATA MARKER
..................................................................................................396FIGURE
E-1 SPANNING TREE
TOPOLOGY....................................................................................................399FIGURE
E-2 SPANNING TREE ACROSS
CMTSES.........................................................................................400FIGURE
F-1 FORMAT OF PACKET PDU FOLLOWING THE TIMING
HEADER................................................430FIGURE H-1
DMPI APPLICATION
................................................................................................................440FIGURE
H-2 DOWNSTREAM DATA SIGNAL PROTOCOL FOR ITU-T RECOMMENDATIONS
J.83
ANNEX A OPERATION
.............................................................................................................445FIGURE
H-3 DOWNSTREAM DATA SIGNAL PROTOCOL FOR ITU-T RECOMMENDATIONS
J.83
ANNEX B
OPERATION..............................................................................................................446FIGURE
H-4 UPSTREAM DATA PROTOCOL
..................................................................................................446FIGURE
H-5 COUNTER SYNCHRONIZATION
.................................................................................................447FIGURE
H-6 UPSTREAM CONTROL MESSAGE
TRANSFER............................................................................448FIGURE
H-7 SPI BUS TRANSACTION
...........................................................................................................449FIGURE
III-1 SINGLE DOWNSTREAM AND SINGLE UPSTREAM CHANNELS PER CM
....................................474FIGURE III-2 MULTIPLE
DOWNSTREAM AND MULTIPLE UPSTREAM CHANNELS PER
CM...........................476FIGURE IV-1 TRANSMISSION &
DEFERENCE STATE TRANSITION DIAGRAM
...............................................479FIGURE V-1 IGMP
SUPPORT CM PASSIVE
MODE.....................................................................................485FIGURE
VI-1 EXAMPLE JITTER WITH MULTIPLE GRANTS PER
SID..............................................................488FIGURE
VI-2 VAD START-UP AND STOP
.....................................................................................................490xix
-
CM-SP-RFIv2.0-I07-041210 Data-Over-Cable Service Interface
SpecificationsThis page intentionally left blank.xx
-
Radio Frequency Interface Specification
CM-SP-RFIv2.0-I07-041210List of Tables
TABLE 4-1 ASSUMED DOWNSTREAM RF CHANNEL TRANSMISSION
CHARACTERISTICS (SEE NOTE 1)......25TABLE 4-2 ASSUMED UPSTREAM RF
CHANNEL TRANSMISSION CHARACTERISTICS (SEE NOTE
1)............26TABLE 6-1 BURST
SIZE................................................................................................................................46TABLE
6-2 INTERLEAVER OPERATING PARAMETERS
..................................................................................47TABLE
6-3 I/Q MAPPING
.............................................................................................................................65TABLE
6-4 DEFINITION OF DIFFERENTIAL QUADRANT CODING
.................................................................66TABLE
6-5 MAXIMUM CHANNEL WIDTH
....................................................................................................76TABLE
6-6 CONSTELLATION GAINS AND POWER
LIMITS............................................................................78TABLE
6-7 BURST PROFILE ATTRIBUTES
....................................................................................................84TABLE
6-8 USER UNIQUE BURST
PARAMETERS..........................................................................................85TABLE
6-9 SPURIOUS EMISSIONS
................................................................................................................92TABLE
6-10 ADJACENT CHANNEL SPURIOUS EMISSIONS RELATIVE TO THE
TRANSMITTED BURST
POWER LEVEL
...........................................................................................................................93TABLE
6-11 SPURIOUS EMISSIONS IN 5 TO 42 MHZ RELATIVE TO THE TRANSMITTED
BURST
POWER LEVEL
...........................................................................................................................93TABLE
6-12 FILTER AMPLITUDE
DISTORTION...............................................................................................96TABLE
6-13 MAXIMUM RANGE OF COMMANDED NOMINAL RECEIVE POWER IN EACH
CARRIER...............98TABLE 6-14 ELECTRICAL OUTPUT FROM CM
..............................................................................