1、BSI Standards PublicationBS ISO 17215-2:2014Road vehicles Videocommunication interface forcameras (VCIC)Part 2: Service discovery and controlBS ISO 17215-2:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 17215-2:2014.The UK participation in its preparation
2、 was entrusted to TechnicalCommittee AUE/16, Electrical and electronic equipment.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its corr
3、ectapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 79963 1ICS 43.040.15Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy
4、 Committee on 30 September 2014.Amendments issued since publicationDate Text affectedBS ISO 17215-2:2014 ISO 2014Road vehicles Video communication interface for cameras (VCIC) Part 2: Service discovery and controlVhicules routiers Interface de communication vido pour camras (ICVC)INTERNATIONAL STAND
5、ARDISO17215-2First edition2014-04-15Reference numberISO 17215-2:2014(E)BS ISO 17215-2:2014ISO 17215-2:2014(E)ii ISO 2014 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2014All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any
6、 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 ISOs member body in the country of the requester.ISO copyright officeCase postale
7、56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 17215-2:2014ISO 17215-2:2014(E) ISO 2014 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope . 12 Normative references 13 Terms, definitions, and abbre
8、viated terms . 23.1 Terms and definitions . 23.2 Abbreviated terms . 44 Conventions . 45 Overview . 45.1 General . 45.2 Document overview and structure 45.3 Open Systems Interconnection (OSI) model . 45.4 Document reference according to OSI model . 56 SOME/IP . 66.1 General . 66.2 Header 76.3 Wire f
9、ormat . 106.4 Parameter serialization 127 Service discovery protocol specification 177.1 General 177.2 Definitions 177.3 General requirements 177.4 Service discovery ECU-internal interface . 197.5 Packet format 198 Runtime behaviour .308.1 General 308.2 SD communication 318.3 RPC communication 38Bib
10、liography .41BS ISO 17215-2:2014ISO 17215-2:2014(E)ForewordISO (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
11、 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 Internationa
12、l 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 t
13、ypes 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
14、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 info
15、rmation 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 assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see t
16、he following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 3, Electric and electronic equipment.ISO 17215 consists of the following parts, under the general title Road vehicles Video communication interface for camer
17、as (VCIC): Part 1: General information and use case definition Part 2: Service discovery and control Part 3: Camera message dictionary Part 4: Implementation of communication requirementsiv ISO 2014 All rights reservedBS ISO 17215-2:2014ISO 17215-2:2014(E)IntroductionDriver assistance systems are mo
18、re and more common in road vehicles. From the beginning, cameras were part of this trend. Analogue cameras were used in the beginning, because of lower complexity of the first systems. With increasing demand for more advanced functionality, digital image processing has been introduced. So-called one
19、 box design cameras (combining a digital image sensor and a processing unit) appeared in the vehicles.Currently, the market demands such systems with multiple functions. Even different viewing directions are in use. It seems to be common sense that 6 up to 12 cameras in a single vehicle will be seen
20、 in the next future. Out of this and the limitation in size, power consumption, etc. it will lead to designs where the cameras are separated from the processing unit. Therefore, a high performance digital interface between camera and processing unit is necessary.This International Standard has been
21、established in order to define the use cases, the communication protocol, and the physical layer requirements of a video communication interface for cameras which covers the needs of driver assistance applications.The video communication interface for cameras incorporates the needs of the whole life
22、 cycle of an automotive grade digital camera, utilizes existing standards to define a long-term stable state-of-art video communication interface for cameras usable for operating and diagnosis purpose, can be easily adapted to new physical data link layers including wired and wireless connections by
23、 using existing adaption layers, and is compatible with AUTOSAR.This part of ISO 17215 is related to the general information and use case definition. This is a general overview document which is not related to the OSI model.To achieve this, it is based on the open systems interconnection (OSI) basic
24、 reference model specified in ISO/IEC 7498-1 and ISO/IEC 10731 which structures communication systems into seven layers. When mapped on this model, the protocol and physical layer requirements specified by this International Standard, in accordance with Table 1, are broken into following layers: app
25、lication (layer 7), specified in ISO 17215-3; presentation layer (layer 6), specified in ISO 17215-2; session layer (layer 5), specified in ISO 17215-2; transport protocol (layer 4), specified in ISO 17215-4, ISO 13400-2; network layer (layer 3), specified in ISO 17215-4, ISO 13400-2; data link laye
26、r (layer 2), specified in ISO 17215-4, ISO 13400-3; physical layer (layer 1), specified in ISO 17215-4, ISO 13400-3. ISO 2014 All rights reserved vBS ISO 17215-2:2014ISO 17215-2:2014(E)Table 1 Specifications applicable to the OSI layersApplicability OSI 7 layers Video communication interface for cam
27、eras Camera diagnosticsSeven layers according to ISO 7498-1 and ISO/IEC 10731Application (layer 7) ISO 17215-3Presentation (layer 6) ISO 17215-2Session (layer 5) ISO 17215-2Transport (layer 4)ISO 17215-4Other future interface standardsISO 13400-2Network (layer 3)Data link (layer 2)ISO 17215-4 ISO 13
28、400-3Physical (layer 1)ISO 17215-1 has been established in order to define the use cases for vehicle communication systems implemented on a video communication interface for cameras; it is an overall document not related to the OSI model.ISO 17215-3 covers the application layer implementation of the
29、 video communication interface for cameras; it includes the API.ISO 17215-2 covers the session and presentation layer implementation of the video communication interface for cameras.ISO 17215-4, being the common standard for the OSI layers 1 to 4 for video communication interface for cameras, comple
30、ments ISO 13400-2 and ISO 13400-3 and adds the requirement for video transmission over Ethernet.ISO 17215-2 and ISO 17215-3 (OSI layer 5 to 7) services have been defined to be independent of the ISO 17215-4 (OSI layer 1 to 4) implementation. Therefore ISO 17215-4 could be replaced by other future co
31、mmunication standards.vi ISO 2014 All rights reservedBS ISO 17215-2:2014INTERNATIONAL STANDARD ISO 17215-2:2014(E)Road vehicles Video communication interface for cameras (VCIC) Part 2: Service discovery and control1 ScopeThis part of ISO 17215 specifies how services can be discovered and controlled.
32、 This functionality is located mainly in layer 5 of the OSI model. Both discovery and control are implemented using the scalable service oriented middlewire over IP (SOME/IP). Figure 1 shows a diagram of these aspects and their relation to other parts of this International Standard.Figure 1 Overview
33、 of ISO 17215The general terminology defined in ISO 17215-1 is also used in this part of ISO 17215.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited a
34、pplies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 7498-1, Information processing systems Open Systems Interconnection Basic Reference Model: The Basic Model Part 1ISO/IEC 10731, Information technology Open Systems Interconnection Bas
35、ic Reference Model Conventions for the definition of OSI services ISO 2014 All rights reserved 1BS ISO 17215-2:2014ISO 17215-2:2014(E)ISO 17215 (all parts), Road vehicles Video communication interface for cameras (VCIC)NOTE The keywords shall, should, etc. as defined in IETF RFC 2119 are used in thi
36、s part of ISO 17215 to indicate requirement levels. Capitalization of those keywords is not required.If an RFC referenced by this part of ISO 17215 has been updated by one or several RFCs, the update is fully applicable for the purpose of implementing this International Standard. This presumes the a
37、dditional document describes an implementation which is compatible with implementation described by document referred to herein.If one or more errata for an RFC referenced by this part of ISO 17215 have been published, all of these errata documents are fully applicable for the purpose of implementin
38、g this International Standard.It is assumed that future implementations of this International Standard will use the most recent versions of the referenced RFCs, but maintain backward compatibility to existing implementations.3 Terms, definitions, and abbreviated terms3.1 Terms and definitionsFor the
39、 purposes of this document, the terms and definitions given in ISO 17215-1 and the following apply.3.1.1AUTOSARopen and standardized automotive software architecture, jointly developed by automobile manufacturers, suppliers, and tool developers3.1.2clientsoftware component that uses a service instan
40、ce, e.g. by invoking a method3.1.3eventfire and forget message invoked on changes or cyclic and sent from server to client3.1.4event grouplogical grouping of events or notifications within a service in order to ease subscription3.1.5fieldrepresentation of a remote property which has up to one getter
41、, up to one setter, and up to one notifierNote 1 to entry: A getter/setter is a method to get/set the value of a field.3.1.6fire and forget communicationRPC call that consists only of a request message3.1.7interface definitionconcrete specification of a service interface (e.g. in IDL or PDU notation
42、)Note 1 to entry: In the case of ISO 17215, the interface definition is contained in ISO 17215-3.3.1.8methodprocedure, function, or subroutine that can be called by a client2 ISO 2014 All rights reservedBS ISO 17215-2:2014ISO 17215-2:2014(E)3.1.9notificationfire and forget message that is sent on de
43、fined status changes or periodically by the notifier of an event or a fieldNote 1 to entry: Field messages cannot be distinguished from an event message; therefore, when referring to an event message, this shall also be true for the messages of notifiers of fields.3.1.10parametersinput, output, or i
44、nput/output arguments of a method3.1.11remote procedure callmethod call between two processes that is transmitted using messages3.1.12requestmessage from the client to the server invoking a method3.1.13request/response communicationRPC that consists of a request and a response3.1.14responsemessage f
45、rom the server to the client transporting results of a method invocation3.1.15serversoftware component that offers a service instance, e.g. by providing a method3.1.16servicelogical combination of zero or more methods, zero or more fields, and zero or more events3.1.17service instanceinstantiation o
46、f the service interface, which can exist more than once in the vehicle or on an ECU3.1.18service interfaceabstract specification of a service including its methods, events, and fields3.1.19uniondata structure that can dynamically assume different data types (also known as variant) ISO 2014 All right
47、s reserved 3BS ISO 17215-2:2014ISO 17215-2:2014(E)3.2 Abbreviated termsTerm DescriptionOSI Open Systems InterconnectionPDU Protocol Data UnitRPC Remote Procedure CallECU Electronic Control UnitIDL Interface Description LanguageAUTOSAR AUTomotive Open System ARchitecture4 ConventionsISO 17215 is base
48、d on the conventions specified in the OSI service conventions (ISO/IEC 10731) as they apply for physical layer, protocol, network and transport protocol, and diagnostic services.5 Overview5.1 GeneralISO 17215 has been established in order to implement a standardized video communication interface for
49、 cameras in vehicles.The focus of ISO 17215 is using existing protocols.Figure 1 specifies the relation to the other parts of the standard.Figure 2 specifies the relation of ISO 17215 to existing protocols.5.2 Document overview and structureThis International Standard consists of a set of four sub-documents, which provide all references and requirements to support the implementation of a video communication interface for cameras according to the standard at hand. ISO 17215-1:. This part provides an overview
