Road vehicles -- In-vehicle Ethernet

This document defines the terms which are used in the ISO 21111 series and provides an overview of the standards for in-vehicle Ethernet including the complementary relations to ISO/IEC/IEEE 8802‑3:2017[7] and its amendments, the document structure in accordance with OSI reference model specified in ISO/IEC 7498‑1[1] and ISO/IEC 10731:1994,[2] type of physical entities, in-vehicle Ethernet specific functionalities, and so on.

Véhicules routiers -- Ethernet embarqué

General Information

Status
Published
Publication Date
25-Oct-2020
Current Stage
5060 - Close of voting Proof returned by Secretariat
Start Date
17-Sep-2020
Completion Date
16-Sep-2020
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INTERNATIONAL ISO
STANDARD 21111-1
First edition
2020-10
Road vehicles — In-vehicle Ethernet —
Part 1:
General information and definitions
Véhicules routiers — Ethernet embarqué —
Partie 1: Information générale et définitions
Reference number
ISO 21111-1:2020(E)
ISO 2020
---------------------- Page: 1 ----------------------
ISO 21111-1:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 21111-1:2020(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Abbreviated terms .............................................................................................................................................................................................. 3

5 In-vehicle Ethernet ............................................................................................................................................................................................. 3

5.1 Relationship of in-vehicle Ethernet physical entity to OSI reference model ..................................... 3

5.1.1 General...................................................................................................................................................................................... 3

5.1.2 Interface of in-vehicle Ethernet physical entity to data link layer ........................................ 4

5.1.3 Interface of in-vehicle Ethernet physical entity to neighbour physical entities........ 4

5.1.4 Wake-up and synchronised link sleep ........................................................................................................... 4

5.1.5 PCS, PMA and PMD sub-layer ................................................................................................................................ 5

5.2 In-vehicle Ethernet physical entity options ................................................................................................................... 5

5.3 Component, physical entity, device, and network system requirements ............................................. 6

Bibliography ................................................................................................................................................................................................................................ 8

© ISO 2020 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 21111-1:2020(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/

iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 31,

Data communication.
A list of all parts in the ISO 21111 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2020 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 21111-1:2020(E)
Introduction

The ISO 21111 series includes in-vehicle Ethernet requirements and test plans that are disseminated in

other International Standards and complements them with additional test methods and requirements.

The resulting requirement and test plans are structured in different documents following the Open

Systems Interconnection (OSI) reference model and grouping the documents that depend on the

physical media and bit rate used.

In general, the Ethernet requirements are specified in ISO/IEC/IEEE 8802-3. The ISO 21111 series

provides supplemental specifications (e.g. wake-up, I/O functionality), which are required for in-vehicle

Ethernet applications. In road vehicles, Ethernet networks are used for different purposes requiring

different bit-rates. Currently, the ISO 21111 series specifies the 1-Gbit/s optical and 100-Mbit/s

electrical physical layer.

The ISO 21111 series contains requirement specifications and test methods related to the in-vehicle

Ethernet. This includes requirement specifications for physical layer entity (e.g. connectors, physical

layer implementations) providers, device (e.g. electronic control units, gateway units) suppliers, and

system (e.g. network systems) designers. Additionally, there are test methods specified for conformance

testing and for interoperability testing.

Safety (electrical safety, protection, fire, etc.) and electromagnetic compatibility (EMC) requirements

are out of the scope of the ISO 21111 series.

The structure of specifications given in the ISO 21111 series complies with the Open Systems

[1] [2]

Interconnection (OSI) reference model specified in ISO/IEC 7498-1 and ISO/IEC 10731 .

This document defines the terms which are used in this series of standards and provides an overview

of the standards for in-vehicle Ethernet including the complementary relations to ISO/IEC/IEEE 8802-3

and the amendments, the document structure, type of physical entities, in-vehicle Ethernet specific

functionalities and so on.
[10]

ISO 21111-2 specifies the interface between reconciliation sublayer and physical entity including

reduced gigabit media independent interface (RGMII), and the common physical entity wake-up and

synchronised link sleep functionalities, independent from physical media and bit rate.

[11]

ISO 21111-3 specifies supplemental requirements to a physical layer capable of transmitting

1-Gbit/s over plastic optical fibre compliant with ISO/IEC/IEEE 8802-3, with specific application to

communications inside road vehicles, and a test plan for physical entity conformance testing.

[12]

ISO 21111-4 specifies the optical components requirements and test methods for 1-Gbit/s optical in-

vehicle Ethernet.
[13]

ISO 21111-5 specifies, for 1-Gbit/s optical in-vehicle Ethernet, requirements on the physical layer at

system level, requirements on the interoperability test set-ups, the interoperability test plan that checks

the requirements for the physical layer at system level, requirements on the device-level physical layer

conformance test set-ups, and device-level physical layer conformance test plan that checks a set of

requirements for the OSI physical layer that are relevant for device vendors.
[14]

ISO 21111-6 specifies advanced features of an ISO/IEC/IEEE 8802-3 in-vehicle Ethernet physical

layer (often also called transceiver), e.g. for diagnostic purposes for in-vehicle Ethernet physical

layers. It specifies advanced physical layer features, wake-up and sleep features, physical layer test

suite, physical layer control requirements and conformance test plan, physical sublayers test suite and

physical sublayers requirements and conformance test plan.
[15]

ISO 21111-7 specifies the implementation for ISO/IEC/IEEE 8802-3, which defines the interface

implementation for automotive applications together with requirements on components used to realize

this Bus Interface Network (BIN). ISO 21111-7 also defines further testing and system requirements

for systems implemented according to the system specification. In addition, ISO 21111-7 defines

© ISO 2020 – All rights reserved v
---------------------- Page: 5 ----------------------
ISO 21111-1:2020(E)

the channels for tests of transceivers with a test wiring harness that simulates various electrical

communication channels.
[16]

ISO 21111-8 specifies the transmission media, the channel performance and the tests for an

ISO/IEC/IEEE 8802-3 in-vehicle Ethernet.
[17]

ISO 21111-9 specifies the data link layer requirements and conformance test plan. It specifies the

requirements and test plan for devices and systems with bridge functionality.
[18]

ISO 21111-10 specifies the application to network layer requirements and test plan. It specifies the

requirements and test plan for devices and systems that include functionality related with OSI layers

from 3 to 7.
Figure 1 shows the parts of the ISO 21111 series and the document structure.
Figure 1 — In-vehicle Ethernet document reference according to OSI model
vi © ISO 2020 – All rights reserved
---------------------- Page: 6 ----------------------
INTERNATIONAL STANDARD ISO 21111-1:2020(E)
Road vehicles — In-vehicle Ethernet —
Part 1:
General information and definitions
1 Scope

This document defines the terms which are used in the ISO 21111 series and provides an overview of the

[7]

standards for in-vehicle Ethernet including the complementary relations to ISO/IEC/IEEE 8802-3:2017

and its amendments, the document structure in accordance with OSI reference model specified in

[1] [2]

ISO/IEC 7498-1 and ISO/IEC 10731:1994, type of physical entities, in-vehicle Ethernet specific

functionalities, and so on.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
100BASE-T1

physical layer for 100-Mbit/s electrical Ethernet over single balanced twisted pair

[8]
Note 1 to entry: 100BASE-T1 is specified in ISO/IEC/IEEE 8802-3:2017/Amd 1 .
3.2
1000BASE-RHC
physical layer for 1-Gbit/s Ethernet over plastic optical fib
...

DRAFT INTERNATIONAL STANDARD
ISO/DIS 21111-1
ISO/TC 22/SC 31 Secretariat: DIN
Voting begins on: Voting terminates on:
2019-07-08 2019-09-30
Road vehicles — In-vehicle Ethernet —
Part 1:
General information and definitions
ICS: 43.040.10
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
This document is circulated as received from the committee secretariat.
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 21111-1:2019(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. ISO 2019
---------------------- Page: 1 ----------------------
ISO/DIS 21111-1:2019(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2019

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/DIS 21111-1:2019(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Symbols and abbreviated terms ........................................................................................................................................................... 3

5 In-vehicle Ethernet ............................................................................................................................................................................................. 4

5.1 Relationship of in-vehicle Ethernet physical entity to OSI reference model ..................................... 4

5.1.1 General...................................................................................................................................................................................... 4

5.1.2 Interface of in-vehicle Ethernet physical entity to data link layer ........................................ 4

5.1.3 Interface of in-vehicle Ethernet physical entity to neighbour physical entities........ 4

5.1.4 Wake-up and synchronised link sleep ........................................................................................................... 5

5.1.5 PCS, PMA and PMD sub-layer ................................................................................................................................ 5

5.2 In-vehicle Ethernet physical entity options ................................................................................................................... 5

5.3 Component, physical entity, device, and network system requirements ............................................. 6

Bibliography ................................................................................................................................................................................................................................ 8

© ISO 2019 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO/DIS 21111-1:2019(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso

.org/iso/foreword .html.

This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 31,

Data communication.
A list of all parts in the ISO 21111 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO 2019 – All rights reserved
---------------------- Page: 4 ----------------------
ISO/DIS 21111-1:2019(E)
Introduction

In general, the Ethernet physical layer requirements are specified in ISO/IEC/IEEE 8802-3:2017. The

ISO 21111 series of standards provides supplemental specifications (e.g, wake-up, I/O

functionality), which are required for in-vehicle Ethernet applications. In road vehicles, Ethernet

networks are used for different purposes requiring different bit-rates. Currently, this standard series

specifies the 1-Gbit/s optical and 100-Mbit/s electrical physical layer.

The documents in the ISO 21111 series contain requirement specifications and test methods related

to the in-vehicle Ethernet. This includes requirement specifications for physical layer entity (e.g.

connectors, PHY implementations) providers, device (e.g. electronic control units, gateway units)

suppliers, and system (e.g. network systems) designers. Additionally, there are test methods specified

for conformance testing and for interoperability testing.

The structure of specifications given in this series of documents complies with the Open Systems

[1] [2]

Interconnection (OSI) reference model specified in ISO/IEC 7498-1 and ISO/IEC 10731 .

ISO 21111-9 specifies the data link layer requirements and conformance test plan. The requirements

and test plan for devices and systems that include bridge functionality are specified in this part of the

ISO 21111 standard series.

ISO 21111-10 specifies the application to network layer requirements and test plan. The requirements

and test plan for devices and systems that include functionality related with OSI layers from 3 to 7 are

specified in this document.

Figure 1 shows the parts of the ISO 21111 standard series and the document structure.

Figure 1 — In-vehicle Ethernet document reference according to OSI model
© ISO 2019 – All rights reserved v
---------------------- Page: 5 ----------------------
DRAFT INTERNATIONAL STANDARD ISO/DIS 21111-1:2019(E)
Road vehicles — In-vehicle Ethernet —
Part 1:
General information and definitions
1 Scope

This document defines the terms which are used in this series of standards and provides an overview

of the standards for in-vehicle Ethernet including the complementary relations to ISO/IEC/IEEE 8802-

3:2017 and the amendments, the document structure in accordance with OSI reference model specified

[1] [2]

in ISO/IEC 7498-1 and ISO/IEC 10731-1994, type of physical entities, in-vehicle Ethernet specific

functionalities, and so on.
[4]

ISO/TR 23841 provides the guidelines for the definition of requirements, conformance and

interoperability test plan structure and layout.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 26262-1:2011, Road vehicles –Functional safety – Part 1: Vocabulary

IEC 60793-2-40:2015, Optical fibres – Part 2-40: Product specification – Sectional specification for

category A4 multimode fires

ISO/IEC/IEEE 8802-3, Information technology — Telecommunications and information exchange between

systems — Local and metropolitan area networks — Specific requirements — Part 3: Standard for Ethernet

ISO/IEC/IEEE 8802-3, Amd 1:2017, Physical layer specifications and management parameters for 100 Mb/s

operation over a single balanced twisted pair cable (100BASE-T1)

ISO/IEC/IEEE 8802-3, Amd 9:2018, Physical layer specifications and management parameters for 1000

Mb/s operation over plastic optical fiber
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
3.1
100BASE-T1

physical layer for 100-Mbit/s electrical Ethernet over single balanced twisted pair specified in ISO/IEC/

IEEE 8802-3:1/Amd 1: 2017
1) Document is currently under drafting.
© ISO 2019 – All rights reserved 1
---------------------- Page: 6 ----------------------
ISO/DIS 21111-1:2019(E)
3.2
1000BASE-RHC

physical layer for 1-Gbit/s Ethernet over plastic optical fibre tailored for automotive application

requirements specified in ISO/IEC/IEEE 8802-3:2017/Amd 9
3.3
balanced twisted pair
twisted pair of 100-Ω wire, which consist of copper core and dielectric jacket
3.4
bridge
layer 2 interconnection device as defined in ISO/IEC/IEEE 8802-3:2017, 1.4
3.5
device
"E/E system" as defined in
...

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