1、BSI Standards Publication Intelligent transport systems Cooperative ITS Part 4: Minimum system requirements and behaviour for core systems PD ISO/TR 17427-4:2015National foreword This Published Document is the UK implementation of ISO/TR 17427-4:2015. The UK participation in its preparation was entr
2、usted to Technical Committee EPL/278, Intelligent transport systems. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct appli
3、cation. The British Standards Institution 2015. Published by BSI Standards Limited 2015 ISBN 978 0 580 87421 5 ICS 03.220.01; 35.240.60 Compliance with a British Standard cannot confer immunity from legal obligations. This Published Document was published under the authority of the Standards Policy
4、and Strategy Committee on 30 November 2015. Amendments/corrigenda issued since publication Date Text affected PUBLISHED DOCUMENT PD ISO/TR 17427-4:2015 ISO 2015 Intelligent transport systems Cooperative ITS Part 4: Minimum system requirements and behaviour for core systems Systmes intelligents de tr
5、ansport Systmes intelligents de transport coopratifs Partie 4: Exigences minimales du systme et comportement des systmes principaux TECHNICAL REPORT ISO/TR 17427-4 Reference number ISO/TR 17427-4:2015(E) First edition 2015-11-01 PD ISO/TR 17427-4:2015 ISO/TR 17427-4:2015(E)ii ISO 2015 All rights res
6、erved COPYRIGHT PROTECTED DOCUMENT ISO 2015, Published in Switzerland All rights reserved. Unless otherwise specified, 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 i
7、ntranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyrightis
8、o.org www.iso.org PD ISO/TR 17427-4:2015 ISO/TR 17427-4:2015(E)Foreword iv Introduction vi 1 Scope . 1 2 T erms and definitions . 1 3 Abbreviated terms 5 4 How to use this Technical Report 7 4.1 Acknowledgements . 7 4.2 Guidance . 7 4.3 Stakeholders 7 5 C-ITS and minimum system requirements and beha
9、viour for core systems 8 5.1 Overview 8 5.2 Subsystem features of the Core System .11 5.2.1 Core2Core subsystem .11 5.2.2 Data distribution subsystem 12 5.2.3 Misbehaviour management subsystem.13 5.2.4 Network services subsystem 13 5.2.5 System service monitor subsystem 13 5.2.6 Time synchronization
10、 subsystem 14 5.2.7 User permissions subsystem 14 5.2.8 User trust management subsystem 14 6 What are the key minimum system requirements and behaviour for core systems issues 15 6.1 Core system requirements .15 6.2 Core System subsystem functional requirements .19 6.2.1 Core to Core subsystem requi
11、rements .19 6.2.2 Data distribution subsystem requirements .23 6.2.3 Data provision request 24 6.2.4 Geo-casts 24 6.2.5 Field node configuration 24 6.2.6 Misbehaviour subsystem requirements .25 6.2.7 Networking services subsystem requirements 25 6.2.8 Network protocol .26 6.2.9 System service monito
12、ring subsystem requirements.26 6.2.10 Time synchronization subsystem requirements .27 6.2.11 State/Mode/Status requirements 28 6.2.12 External interface requirements .28 6.2.13 User permission subsystem requirements 28 6.2.14 User trust management requirements 29 6.2.15 System performance subsystem
13、requirements 31 6.2.16 System interface subsystem requirements 31 6.3 Core system - other requirements 31 6.3.1 Physical security .31 6.3.2 Environmental features 31 6.3.3 Backup power 32 6.3.4 Maintainability .32 6.3.5 Constraints .32 7 Internet-based communications standards 32 8 Internal interfac
14、es .39 9 5,9 GHz security credential requirements 40 Bibliography .41 ISO 2015 All rights reserved iii Contents Page PD ISO/TR 17427-4:2015 ISO/TR 17427-4:2015(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodi
15、es). 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
16、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 des
17、cribed 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
18、 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 th
19、e 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 on the meaning of ISO specific terms and expressions related to conformity assessmen
20、t, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information The committee responsible for this document is ISO/TC 204, Intelligent transport systems. ISO 17427 consists of the following part
21、s, under the general title Intelligent transport systems Cooperative ITS: Part 2: Framework Overview Technical Report Part 3: Concept of operations (ConOps) for core systems Technical Report Part 4: Minimum system requirements and behaviour for core systems Technical Report Part 6: Core system risk
22、assessment methodology Technical Report Part 7: Privacy aspects Technical Report Part 8: Liability aspects Technical Report Part 9: Compliance and enforcement aspects Technical Report Part 10: Driver distraction and information display Technical Report The following parts are under preparation: Part
23、 1: Roles and responsibilities in the context of co-operative ITS architecture(s) Part 5: Common approaches to security Technical Report Part 11: Compliance and enforcement aspects Technical Report Part 12: Release processes Technical Report Part 13: Use case test cases Technical Report Part 14: Mai
24、ntenance requirements and processes Technical Reportiv ISO 2015 All rights reserved PD ISO/TR 17427-4:2015 ISO/TR 17427-4:2015(E) This Technical Report provides an informative minimum system requirements and behaviour for core systems for Cooperative Intelligent Transport Systems (C-ITS). It is inte
25、nded to be used alongside ISO 17427-1, ISO/TR 17465-1 and other parts of ISO 17465, and ISO 21217. Detailed specifications for the application context will be provided by other ISO, CEN and SAE deliverables, and communications specifications will be provided by ISO, IEEE and ETSI. ISO 2015 All right
26、s reserved v PD ISO/TR 17427-4:2015 ISO/TR 17427-4:2015(E) Introduction Intelligent transport systems (ITS) are transport systems in which advanced information, communication, sensor and control technologies, including the Internet, are applied to increase safety, sustainability, efficiency, and com
27、fort. A distinguishing feature of ITS is its communication with outside entities. Some ITS systems operate autonomously, for example, adaptive cruise control uses radar/lidar and/or video to characterize the behaviour of the vehicle in front and adjust its vehicle speed accordingly. Some ITS systems
28、 are informative, for example, variable message signs at the roadside or transmitted into the vehicle, provide information and advice to the driver. Some ITS systems are semi-autonomous in that they are largely autonomous but rely on static or broadcast data, for example, GNSS (2.22) based SatNav sy
29、stems operate autonomously within a vehicle but are dependent on receiving data broadcast from satellites in order to calculate the location of the vehicle. Cooperative Intelligent transport systems (C-ITS) are a group of ITS technologies where service provision is enabled by, or enhanced by, the us
30、e of live, present situation related, dynamic data/information from other entities of similar functionality for example, from one vehicle to other vehicle(s), and/or between different elements of the transport network, including vehicles and infrastructure for example, from the vehicle to an infrast
31、ructure managed system or from an infrastructure managed system to vehicle(s). Effectively, these systems allow vehicles to talk to each other and to the infrastructure. These systems have significant potential to improve the transport network. A distinguishing feature of C-ITS is that data is used
32、across application/service boundaries. This Technical Report is a living document and as our experience with C-ITS develops, it is intended that it will be updated from time to time, as and when we see opportunities to improve this Technical Report.vi ISO 2015 All rights reserved PD ISO/TR 17427-4:2
33、015 TECHNICAL REPORT ISO/TR 17427-4:2015(E) Intelligent transport systems Cooperative ITS Part 4: Minimum system requirements and behaviour for core systems 1 Scope The scope of this Technical Report is, as an informative document, to identify potential critical minimum system requirements and behav
34、iour for core systems issues that C-ITS service provision may face or introduce, to consider strategies for how to identify, control, limit or mitigate such issues. The objective of this Technical Report is to raise awareness of and consideration of such issues and to give pointers, where appropriat
35、e, to subject areas and, where available, to existing standards deliverables that provide specifications for all or some of these aspects. This Technical Report does not provide specifications for solutions of these issues. 2 T erms a nd definiti ons 2.1 anonymity lacking individuality, distinction,
36、 and recognizability within message exchanges 2.2 an o n y m o us c e r t if i c a te s certificate which contains a pseudonym of the system user instead of their real identity in the subject of the certificate and thus preventing other system service recipients from identifying the certificate owne
37、r when the certificate is used to sign or encrypt a message in the connected vehicle/highway system (C-ITS, connected vehicle) Note 1 to entry: The real identity of the anonymous certificates can be traced by authorized system operators by using the services of a registration authority and/or certif
38、ication authority. 2.3 application app software application 2.4 application service service provided, for example, by a service provider accessing data from the IVS within the vehicle in the case of C-ITS, via a wireless communications network, or provided on-board the vehicle as the result of softw
39、are (and potentially also hardware and firmware) installed by a service provider or to a service providers instruction 2.5 authenticity property of being of undisputed origin and not a copy, authenticated, and having the origin supported by unquestionable evidence Note 1 to entry: Something that has
40、 had its authenticity confirmed could be described as “authenticated” or “verified”. ISO 2015 All rights reserved 1 PD ISO/TR 17427-4:2015 ISO/TR 17427-4:2015(E) 2.6 authorization process of determining what types of activities or access are permitted on a network Note 1 to entry: This is usually us
41、ed in the context of authentication: once you have authenticated a user, they may be authorized to have access to a specific service. 2.7 bad actor role played by a user or another system that provides false or misleading data, operates in such a fashion as to impede other service recipients, and/or
42、 operates outside of its authorized scope 2.8 C-ITS Cooperative ITS group of ITS technologies where service provision is enabled, or enhanced by, the use of live, present situation related, data/information from other entities of similar functionality (for example, from one vehicle to other vehicle(
43、s), and/or between different elements of the transport network, including vehicles and infrastructure (for example from the vehicle to an infrastructure managed system or from an infrastructure managed system to vehicle(s) 2.9 catalogue repository used by the Data Distribution subsystem for maintain
44、ing data publishers information including the type of data they are transmitting, frequency of that data, address, data source, etc. 2.10 centre entity that provides application, management, administrative, and support functions from a fixed location (the terms “back office” and “centre” are used in
45、terchangeably) Note 1 to entry: Centre is, traditionally, a transportation-focused term, evoking management centres to support transportation needs, while back office generally refers to commercial applications; from the perspective of this Technical Report, these are considered the same. 2.11 core
46、services set of functions within the Core System subsystems that interact with system service recipients 2.12 core system personnel staff that operate and maintain the Core System Note 1 to entry: In addition to network managers and operations personnel, Core System personnel includes the administra
47、tors, operators, maintainers, developers, deployers and testers. 2.13 coverage area geographic jurisdiction within which a Core System provides core services (2.11) 2.14 data provision act of providing data to a core system 2.15 delta updates records data that is new since the last block of data tha
48、t was downloaded2 ISO 2015 All rights reserved PD ISO/TR 17427-4:2015 ISO/TR 17427-4:2015(E) 2.16 d i g it a l c er t i f i c a t e electronic “identification card” that establishes user credentials when doing business or other transactions Note 1 to entry: This is issued by a certification authorit
49、y: contains name, a serial number, expiration dates, a copy of the certificate holders public key (2.40) (used for encrypting messages and digital signatures), and the digital signature of the certificate-issuing authority so that a recipient can verify that the certificate is real. Note 2 to entry: From the SysAdmin, Audit, Network, Security Institute - www.sans.org 2.17 environment circumstances, objects, and conditions that
