ISO/TR TECHNICAL REPORT 17427-4 First edition 2015-11-01 Intelligent transport systems Cooperative ITS - Part 4: Minimum system requirements and behaviour for core systems Systemes intelligents de transport - Systemes intelligents de transport cooperatifs- Partie 4: Exigences minimales du systeme et comportement des systemesprincipaux Reference number ISO/TR17427-4:2015(E) SO International Organization for Standardization @ IS0 2015 vided by IHS under ed without license from IHS IS0/TR 17427-4:2015(E) COPYRIGHT PROTECTED DOCUMENT IS0 2015, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form 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 Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel.+4122 749 0111 Fax +4122 749 09 47 copyright@iso.org www.iso.org ensee-ZHEJIANG INST OF STANDARDIzARoISQ15- All rights reserved etworking permitted without license from IHS IS0/TR 17427-4:2015(E) Contents Page Foreword ..iv Introduction. ...vi 1 Scope. 2 Terms and definitions 3 Abbreviated terms 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 behaviour for core systems' .8 5.1 Overview 5.2 Subsystem features of the 'Core System' ..11 5.2.1 Core2Coresubsystem .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 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 issues15 6.1 Core system requirements. .15 6.2 Core System subsystem functional requirements ..19 6.2.1 Core to Core subsystem requirements. .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 monitoring 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 Systemperformance subsystem 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-basedcommunicationsstandards. .32 8 Internal interfaces .39 9 5,9 GHz security credential requirements. ..40 Bibliography .41 iii ISee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 ed without license from IHS Not for Resale, 2016/1/8 02:31:32