ETSI TR 103 299 V2.1.1 (2019-06)

Intelligent Transport System (ITS); Cooperative Adaptive Cruise Control (CACC); Pre-standardization study

DTR/ITS-00164

General Information

• Status: Published
• Publication Date: 26-Jun-2019
• Technical Committee: ITS WG1 - Application Requirements and Services
• Current Stage: 12 - Completion
• Due Date: 16-May-2019
• Completion Date: 27-Jun-2019

Standards Content (Sample)

ETSI TR 103 299 V2.1.1 (2019-06)






TECHNICAL REPORT
Intelligent Transport Systems (ITS);
Cooperative Adaptive Cruise Control (CACC);
Pre-standardization study

---------------------- Page: 1 ----------------------
2 ETSI TR 103 299 V2.1.1 (2019-06)



Reference
DTR/ITS-00164
Keywords
autonomic networking, ITS
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2019.
All rights reserved.

TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.
TM TM
3GPP and LTE are trademarks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and
of the oneM2M Partners.
®
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI

---------------------- Page: 2 ----------------------
3 ETSI TR 103 299 V2.1.1 (2019-06)
Contents
Intellectual Property Rights . 6
Foreword . 6
Modal verbs terminology . 6
Introduction . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 7
3 Definition of terms, symbols and abbreviations . 8
3.1 Terms . 8
3.2 Symbols . 9
3.3 Abbreviations . 9
4 CACC introduction . 10
4.1 Background . 10
4.2 CACC definition . 11
4.3 CACC target time gap . 11
4.4 CACC and automation levels . 12
5 CACC use cases and operations . 13
5.1 UC001: Follow the TV at configured Δt . 13
target
5.1.1 Introduction. 13
5.1.2 Pre-conditions . 13
5.1.3 Actors . 13
5.1.4 Triggering condition . 13
5.1.5 Normal Flow . 13
5.1.6 Termination condition. 14
5.1.7 Use case diagram and use case illustration . 14
5.1.8 Alternative flow . 15
5.1.9 Post-conditions . 16
5.2 UC002: Follow the TV at automatically adjusted Δt . 16
target
5.2.1 Introduction. 16
5.2.2 Pre-conditions . 16
5.2.3 Actors . 16
5.2.4 Triggering condition . 16
5.2.5 Termination condition. 17
5.2.6 Use case diagram and use case illustration . 17
5.2.7 Normal Flow . 18
5.2.8 Alternative flow . 18
5.2.9 Post-conditions . 18
5.3 UC003: Single lane CACC string . 18
5.3.1 Introduction. 18
5.3.2 Pre-conditions . 18
5.3.3 Actors . 18
5.3.4 Triggering condition . 18
5.3.5 Termination condition. 19
5.3.6 Use case diagram and use case illustration . 19
5.3.7 Normal Flow . 19
5.3.8 Alternative flow . 19
5.3.9 Post-conditions . 20
5.4 UC004: Single lane CACC string support service provided by road side . 20
5.4.1 Introduction. 20
5.4.2 Pre-conditions . 20
5.4.3 Actors . 20
5.4.4 Triggering condition . 21
ETSI

---------------------- Page: 3 ----------------------
4 ETSI TR 103 299 V2.1.1 (2019-06)
5.4.5 Termination condition. 21
5.4.6 Use case diagram and use case illustration . 21
5.4.7 Normal Flow . 21
5.4.8 Alternative flow . 22
5.4.9 Post-conditions . 22
5.5 UC005: Co-operation of lane keeping assistance system and CACC . 22
5.5.1 Introduction. 22
5.5.2 Pre-conditions . 22
5.5.3 Actors . 22
5.5.4 Triggering condition . 22
5.5.5 Termination condition. 22
5.5.6 Normal Flow . 22
5.5.7 Alternative flow . 23
5.5.8 Post-conditions . 23
5.6 UC006: Co-operation of lane change assistance system and CACC . 23
5.6.1 Introduction. 23
5.6.2 Pre-conditions . 23
5.6.3 Actors . 23
5.6.4 Triggering condition . 23
5.6.5 Termination condition. 24
5.6.6 Normal Flow . 24
5.6.7 Alternative flow . 24
5.6.8 Post-conditions . 24
5.7 UC007: CACC pair passing through I2V equipped traffic lights . 24
5.7.1 Introduction. 24
5.7.2 Pre-conditions . 24
5.7.3 Actors . 24
5.7.4 Triggering condition . 25
5.7.5 Termination condition. 25
5.7.6 Use case diagram and use case illustration . 25
5.7.7 Normal Flow . 25
5.7.8 Alternative flow . 25
5.7.9 Post-conditions . 26
6 CACC architecture . 26
6.1 Functional architecture . 26
6.2 Information architecture . 27
6.3 Communication architecture . 28
7 Functional requirements . 30
7.1 Application layer . 30
7.2 Facilities layer . 30
7.3 Networking & Transport layer . 30
7.4 Access layer . 31
7.5 Management & security . 31
8 Operational requirements . 31
8.1 Application layer . 31
8.2 Facilities layer . 31
8.3 Networking & Transport layer . 32
8.4 Access layer . 32
9 Standards recommendations . 32
9.1 Facilities layer . 32
9.1.1 Options for CACC data inclusion in facilities layer PDU . 32
9.1.2 CA basic service . 32
9.1.2.1 Introduction . 32
9.1.2.2 Triggering conditions . 33
9.1.2.3 Message content extension . 33
9.1.2.4 Dissemination requirements . 33
9.1.2.5 Dissemination protocol . 33
9.1.2.6 Security requirements. 34
9.1.2.6.1 ITS AID management . 34
ETSI

---------------------- Page: 4 ----------------------
5 ETSI TR 103 299 V2.1.1 (2019-06)
9.1.2.6.2 SSP . 34
9.2 Networking & Transport layer . 34
9.3 Access layer . 34
9.3.1 Channel usage . 34
9.3.2 Over-the-air update . 35
9.4 Management & security . 35
9.4.1 Communication profile and SAM . 35
9.4.2 Security and privacy . 35
Annex A: Recommendations on CACC DEs and DFs . 36
A.1 DEs and DFs to support CACC use cases . 36
A.2 DE and DF data setting rules . 38
A.2.1 accelerationControl . 38
A.2.2 timeToPrecedingVehicle . 38
A.2.3 automatedVehicleContainerLowFrequency . 38
A.2.4 roadSideSupportedAutomatedDriving . 39
A.2.5 automatedConrtrol . 39
A.2.6 targetSpeed . 39
A.2.7 targetLongitudinalAcceleration . 39
A.2.8 brakingCapacity . 39
A.2.9 targetTimeToPrecedingVehicle . 39
A.2.10 targetTimeToFollowingVehicle . 40
A.2.11 pathPrediction . 40
A.2.12 groupID . 40
A.2.13 groupSpeed . 40
A.2.14 limitedLength . 40
A.2.15 stringLeadVehiclePosition . 40
A.2.16 limitedLengthInNumber . 41
A.2.17 orderInString . 41
A.2.18 leadVehicle . 41
A.2.19 roadSideCaccContainer . 41
A.2.20 recommendedTargetTimeGap . 41
A.2.21 startingPosition . 41
A.2.22 caccLanePosition . 41
A.2.23 recommendedSpeed. 42
A.2.24 recommendedVehicleType . 42
Annex B: Application state machine transition . 43
Annex C: Bibliography . 44
History . 45

ETSI

---------------------- Page: 5 ----------------------
6 ETSI TR 103 299 V2.1.1 (2019-06)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables 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 (https://ipr.etsi.org/).
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.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Foreword
This Technical Report (TR) has been produced by ETSI Technical Committee Intelligent Transport Systems (ITS).
Modal verbs terminology
In the present document "should", "should not", "may", "need not", "will", "will not", "can" and "cannot" are to be
interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
Introduction
The CACC application is an extension of the in-vehicle Adaptive Cruise Control (ACC) system. It enables further
reduction of the time gap with preceding vehicles compared to the ACC system, thanks to Vehicular communications.

ETSI

---------------------- Page: 6 ----------------------
7 ETSI TR 103 299 V2.1.1 (2019-06)
1 Scope
The present document describes the outputs of a pre-standardization study of the Cooperative Adaptive Cruise Control
(CACC) application. It consists of:
• Definition of the CACC use cases;
• Definition of CACC architecture;
• Requirement analysis of the application and the communication systems;
• Recommendations on the standardization needs for the communication layers (including facilities layer,
Networking & Transport layer and access layer) in support of the CACC application;
• Recommendation on the CACC application standardization.
2 References
2.1 Normative references
Normative references are not applicable in t
...