ETSI TS 102 639-4 V1.1.1 (2009-04)

Access and Terminals, Transmission and Multiplexing (ATTM); Third Generation Transmission Systems for Interactive Cable Television Services - IP Cable Modems; Part 4: MAC and Upper Layer Protocols [ITU-T Recommendation J.222.2 (07/2007), modified]

DTS/ATTM-02006-4

General Information

• Status: Published
• Publication Date: 02-Apr-2009
• Technical Committee: ATTM AT2 - Infrastructure, Physical Networks & Communication Systems
• Current Stage: 12 - Completion
• Due Date: 20-Mar-2009
• Completion Date: 03-Apr-2009

Standards Content (Sample)

ETSI TS 102 639-4 V1.1.1 (2009-04)
Technical Specification

Access and Terminals, Transmission and Multiplexing (ATTM);
Third Generation Transmission Systems for
Interactive Cable Television Services - IP Cable Modems;
Part 4: MAC and Upper Layer Protocols
[ITU-T Recommendation J.222.2 (07/2007), modified]

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2 ETSI TS 102 639-4 V1.1.1 (2009-04)




Reference
DTS/ATTM-02006-4
Keywords
access, broadband, cable, endorsement, MAC,
modem
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3 ETSI TS 102 639-4 V1.1.1 (2009-04)

Contents
Intellectual Property Rights.4
Foreword.4
Introduction .4
1 Scope.5
2 References.5
2.1 Normative references.5
2.2 Informative references.6
3 Definitions and abbreviations.6
3.1 Definitions.6
3.2 Abbreviations.9
Endorsement notice .10
Modifications to ITU-T Recommendation J.222.2 .10
Annex A (informative): Bibliography.11
History .14

ETSI

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4 ETSI TS 102 639-4 V1.1.1 (2009-04)

Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://webapp.etsi.org/IPR/home.asp).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This Technical Specification (TS) has been produced by ETSI Technical Committee Access, Terminals, Transmission
and Multiplexing (ATTM).
The present document is part 4 of a multi-part deliverable covering Third Generation Transmission Systems for
Interactive Cable Television Services - IP Cable modems. Full details of the entire series can be found in part 1 [i.1].
Introduction
This European Standard (Cable DOCSIS 3.0 Network series) has been produced by ETSI Access, Terminals,
Transmission and Multiplexing Technical Committee (ATTM), Cable Access Network sub-group.
ETSI

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5 ETSI TS 102 639-4 V1.1.1 (2009-04)

1 Scope
The present document is part of a series of ETSI standards that define the third generation of high-speed data-over-cable
systems. The third-generation transmission systems introduces a number of new features that build upon what was
present in previous versions (ES 201 488 [4] and ES 202 488-2 [3]). The present document includes key new features
for the MAC and Upper Layer Protocol Interface, and defines the MAC layer protocols as well as requirements for
upper layer protocols (e.g. IP, DHCP, etc.).
These series of ETSI standards were developed for the benefit of the cable industry, including contributions by
operators and vendors from, Europe, North America and other regions.
The source material for this specification was provided by the ITU-T Recommendation J.222.2 [8] for which the most
recent version can be found at http://www.itu.int/ITU-T/.
NOTE: Also refer to TS 102 639-1 [i.2] for the background and overview of the DOCSIS® 3.0 family of ETSI
standards.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• Non-specific reference may be made only to a complete document or a part thereof and only in the following
cases:
- if it is accepted that it will be possible to use all future changes of the referenced document for the
purposes of the referring document;
- for informative references.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
2.1 Normative references
The following referenced documents are indispensable for the application of the present document. For dated
references, only the edition cited applies. For non-specific references, the latest edition of the referenced document
(including any amendments) applies.
[1] ETSI TS 102 639-3: "Access and Terminals, Transmission and Multiplexing (ATTM); Third
Generation Transmission Systems for Interactive Cable Television Services - IP Cable Modems;
Part 3: Downstream Interface; ITU-T Recommendation J.210 (11/2006), modified".
[2] ETSI TS 102 639-2: "Access and Terminals, Transmission and Multiplexing (ATTM); Third
Generation Transmission Systems for Interactive Cable Television Services - IP Cable Modems;
Part 2: Physical Layer: ITU-T Recommendation J.222.1 (07/2007), modified".
[3] ETSI ES 202 488-2: "Access and Terminals (AT); Second Generation Transmission Systems for
Interactive Cable Television Services - IP Cable Modems; Part 2: Radio frequency interface
specification".
[4] ETSI ES 201 488: "Access and Terminals (AT); Data Over Cable Systems".
ETSI

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6 ETSI TS 102 639-4 V1.1.1 (2009-04)

[5] ETSI TS 102 639-5: "Access and Terminals, Transmission and Multiplexing (ATTM); Third
Generation Transmission Systems for Interactive Cable Television Services - IP Cable Modems;
Part 5: Security Services; ITU-T Recommendation J.222.3 (07/2007), modified".
[6] ETSI TS 101 909-5: "Access and Terminals (AT);Digital Broadband Cable Access to the Public
Telecommunications Network; IP Multimedia Time Critical Services; Part 5: Dynamic Quality of
Service for the Provision of Real Time Services over Cable Television Networks using Cable
Modems".
[7] ETSI TS 101 909-4: "Digital Broadband Cable Access to the Public Telecommunications
Network; IP Multimedia Time Critical Services; Part 4: Network Call Signalling Protocol [Partial
Endorsement of ITU-T Recommendation J.162 (11/2005), modified]".
[8] ITU-T Recommendation J.222.2. "MAC and Upper Layer protocols for third-generation
transmission systems for interactive cable television services - IP cable modems".
2.2 Informative references
The following referenced documents are not essential to the use of the present document but they assist the user with
regard to a particular subject area. For non-specific references, the latest version of the referenced document (including
any amendments) applies.
[i.2] ETSI TS 102 639-1: "Access and Terminals, Transmission and Multiplexing (ATTM); Third
Generation Transmission Systems for Interactive Cable Television Services - IP Cable Modems;
Part 1: General".
[i.3] ETSI TS 102 639-4: "Access and Terminals, Transmission and Multiplexing (ATTM); Third
Generation Transmission Systems for Interactive Cable Television Services - IP Cable Modems;
Part 4: MAC and Upper Layer Protocols; ITU-T Recommendation J.222.2 (07/2007), modified".
[i.4] ITU-T Recommendation J.222.1: "Third-generation transmission systems for interactive cable
television services - IP cable modems: Physical layer specification".
[i.5] ITU-T Recommendation J.210: "Downstream RF Interface for Cable Modem Termination
Systems".
[i.6] ITU-T Recommendation J.222.3: "Third-generation transmission systems for interactive cable
television services - IP cable modems: Security services".
[i.7] ITU-T Recommendation J.112: "Transmission systems for interactive cable television services".
[i.8] ITU-T Recommendation J.122: "Second-generation transmission systems for interactive cable
television services - IP cable modems".
[i.9] ITU-T Recommendation J.163: "Dynamic quality of service for the provision of real-time services
over cable television networks using cable modems".
[i.10] ITU-T Recommendation J.162: "Network call signalling protocol for the delivery of time-critical
services over cable television networks using cable modems".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
active codes: set of spreading codes which carry information in an S-CDMA upstream
NOTE: The complementary set, the unused codes, are idle and are not transmitted. Reducing the number of active
codes below the maximum value of 128 may provide advantages including more robust operation in the
presence of coloured noise.
ETSI

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7 ETSI TS 102 639-4 V1.1.1 (2009-04)

bonded channel(s): one or more independent RF channels whose data packets are logically combined into one
higher-speed data stream
bonded channel Set: identified set of upstream or downstream channels among which a stream of packets is distributed
bonding group: list of channels providing a means to identify the specific channels bonded together
NOTE: Sometimes referred to as a "Bonded Channel Group".
cable modem service group: in the HFC plant topology, the complete set of downstream and upstream channels within
a single CMTS that a single Cable Modem could potentially receive or transmit on
NOTE: In most HFC deployments, a CM-SG corresponds to a single Fiber Node. Usually, a CM-SG serves
multiple CMs.
DOCSIS 1.x: abbreviation for "DOCSIS 1.0 or 1.1"
downstream bonded service flow: downstream Service Flow for which DOCSIS MAC Frames are transmitted on one
or more Downstream Channels
downstream bonding group: subcomponent object of a MAC Domain that distributes packets from an assigned set of
downstream bonding service flows to an associated set of downstream channels of that mac domain
downstream service extended header: DOCSIS extended header that contains a Downstream Service ID (DSID)
downstream service group: complete set of Downstream Channels (DCs) from a single CMTS that could potentially
reach a single Cable Modem
NOTE: A DS-SG corresponds to a broadband forward carrier path signal from one CMTS. In an HFC
deployment, a DS-SG corresponds to the downstream fiber transmission from one CMTS to one or more
Fiber Nodes.
load balancing group: full or partial subset of a MAC Domain Cable Modem Service Group (MD-CM-SG) to which a
CM is administratively assigned
NOTE: LBGs contain at least one upstream channel and at least one downstream channel.
modular cable modem termination system: CMTS composed of discrete functional blocks linked together using
Gigabit Ethernet links
multiple outstanding requests: ability of the cable modem to make additional bandwidth request for new packets for a
service flow while one or more previous requests for older packets remain unfulfilled
Pre-3.0 DOCSIS: versions of Data-Over-Cable-Service-Interface-Specifications (DOCSIS) specifications prior to the
DOCSIS 3.0 suite of specifications
primary-capable downstream channel: Downstream Channel that can be used by a DOCSIS 3.0 CM as its Primary
Downstream Channel, or by a DOCSIS 1.x/2.0 CM as its Downstream Channel
primary channel: See Primary Downstream Channel.
primary downstream channel: downstream channel from which a CM derives CMTS master clock timing for
upstream transmission
NOTE: All other concurrently received channels are called "secondary downstream channels".
primary service flow: first service flow, in each direction, defined in the CM configuration file
queue-depth based request: request in multiples of bytes based on the CM’s queue depth and QoS parameters for a
specific service flow
NOTE: This request does not include any estimation of physical layer overhead.
receive channel configuration: CM
...