SVENSK STANDARD SS-ISO :2010

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1 SVENSK STANDARD SS-ISO :2010 Fastställd/Approved: Publicerad/Published: Utgåva/Edition: 1 Språk/Language: engelska/english ICS: Vägfordon FlexRay-kommunikation Del 1: Allmän information och definitioner av användarfall (ISO :2010, IDT) Road vehicles Communication on FlexRay Part 1: General information and use case definition (ISO :2010, IDT)

2 Standarder får världen att fungera SIS (Swedish Standards Institute) är en fristående ideell förening med medlemmar från både privat och offentlig sektor. Vi är en del av det europeiska och globala nätverk som utarbetar internationella standarder. Standarder är dokumenterad kunskap utvecklad av framstående aktörer inom industri, näringsliv och samhälle och befrämjar handel över gränser, bidrar till att processer och produkter blir säkrare samt effektiviserar din verksamhet. Delta och påverka Som medlem i SIS har du möjlighet att påverka framtida standarder inom ditt område på nationell, europeisk och global nivå. Du får samtidigt tillgång till tidig information om utvecklingen inom din bransch. Ta del av det färdiga arbetet Vi erbjuder våra kunder allt som rör standarder och deras tillämpning. Hos oss kan du köpa alla publikationer du behöver allt från enskilda standarder, tekniska rapporter och standardpaket till handböcker och onlinetjänster. Genom vår webbtjänst e-nav får du tillgång till ett lättnavigerat bibliotek där alla standarder som är aktuella för ditt företag nns tillgängliga. Standarder och handböcker är källor till kunskap. Vi säljer dem. Utveckla din kompetens och lyckas bättre i ditt arbete Hos SIS kan du gå öppna eller företagsinterna utbildningar kring innehåll och tillämpning av standarder. Genom vår närhet till den internationella utvecklingen och ISO får du rätt kunskap i rätt tid, direkt från källan. Med vår kunskap om standarders möjligheter hjälper vi våra kunder att skapa verklig nytta och lönsamhet i sina verksamheter. Vill du veta mer om SIS eller hur standarder kan effektivisera din verksamhet är du välkommen in på eller ta kontakt med oss på tel Standards make the world go round SIS (Swedish Standards Institute) is an independent non-profit organisation with members from both the private and public sectors. We are part of the European and global network that draws up international standards. Standards consist of documented knowledge developed by prominent actors within the industry, business world and society. They promote cross-border trade, they help to make processes and products safer and they streamline your organisation. Take part and have in uence As a member of SIS you will have the possibility to participate in standardization activities on national, European and global level. The membership in SIS will give you the opportunity to in uence future standards and gain access to early stage information about developments within your eld. Get to know the nished work We offer our customers everything in connection with standards and their application. You can purchase all the publications you need from us - everything from individual standards, technical reports and standard packages through to manuals and online services. Our web service e-nav gives you access to an easy-to-navigate library where all standards that are relevant to your company are available. Standards and manuals are sources of knowledge. We sell them. Increase understanding and improve perception With SIS you can undergo either shared or in-house training in the content and application of standards. Thanks to our proximity to international development and ISO you receive the right knowledge at the right time, direct from the source. With our knowledge about the potential of standards, we assist our customers in creating tangible bene t and pro tability in their organisations. If you want to know more about SIS, or how standards can streamline your organisation, please visit or contact us on phone +46 (0)

3 Den internationella standarden ISO :2010 gäller som svensk standard. Detta dokument innehåller den officiella engelska versionen av ISO :2010. The International Standard ISO :2010 has the status of a Swedish Standard. This document contains the official English version of ISO :2010. Copyright/Upphovsrätten till denna produkt tillhör SIS, Swedish Standards Institute, Stockholm, Sverige. Användningen av denna produkt regleras av slutanvändarlicensen som åter nns i denna produkt, se standardens sista sidor. Copyright SIS, Swedish Standards Institute, Stockholm, Sweden. All rights reserved. The use of this product is governed by the end-user licence for this product. You will nd the licence in the end of this document. Upplysningar om sakinnehållet i standarden lämnas av SIS, Swedish Standards Institute, telefon Standarder kan beställas hos SIS Förlag AB som även lämnar allmänna upplysningar om svensk och utländsk standard. Information about the content of the standard is available from the Swedish Standards Institute (SIS), telephone Standards may be ordered from SIS Förlag AB, who can also provide general information about Swedish and foreign standards. Denna standard är framtagen av kommittén för Datakommunikation och diagnostik för vägfordon, SIS/TK 240/AG 1. Har du synpunkter på innehållet i den här standarden, vill du delta i ett kommande revideringsarbete eller vara med och ta fram andra standarder inom området? Gå in på - där hittar du mer information.

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5 SS-ISO :2010 (E) ISO :2010(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. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. 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. ISO was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 3, Electrical and electronic equipment. ISO consists of the following parts, under the general title Road vehicles Communication on FlexRay: Part 1: General information and use case definition Part 2: Communication layer services ISO 2010 All rights reserved iii

6 SS-ISO :2010 (E) ISO :2010(E) Provläsningsexemplar / Preview Introduction This part of ISO is based on the Open Systems Interconnection (OSI) Basic Reference Model specified in ISO/IEC 7498 and ISO/IEC 10731, which structures communication systems into seven layers (see example in Table 1). When mapped on this model, ISO incorporates the network layer (layer 3) and the transport layer (layer 4) services as communication layer services. The ISO document set provides an implementer with all documents and references required to support the communication implementation on FlexRay networks. ISO : General information and use case definition (this part), provides an overview of the document set along with the use case definitions and a common set of resources (definitions, references) for use by all subsequent parts. ISO : Communication layer services specifies a communication protocol to meet the requirements of FlexRay-based vehicle network systems as specified in the FlexRay Communications Systems Protocol Specification. NOTE Additional parts of ISO will be introduced as necessary. Table 1 Example of enhanced diagnostic specifications according to the OSI layers Applicability OSI layers Vehicle manufacturer enhanced diagnostics Application layer ISO Seven layer according to ISO/IEC and ISO/IEC Presentation layer N/A Session layer ISO Transport layer Network layer Data link layer Physical layer ISO FlexRay Communications Systems Protocol Specification FlexRay Communications System Electrical Physical Layer Specification iv ISO 2010 All rights reserved

7 SS-ISO :2010 (E) Road vehicles Communication on FlexRay Part 1: General information and use case definition 1 Scope This part of ISO defines common requirements for vehicle systems implemented on a FlexRay communication link, as specified in the FlexRay Communications Systems Protocol Specification. It also describes general use cases and communication scenarios that are covered by FlexRay transport and network layer. Each use case drives specific communication capabilities and requirements of the vehicle communication interface. 2 Normative references The following referenced documents are indispensable for the application 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/IEC , Information technology Open Systems Interconnection Basic Reference Model: The Basic Model 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO/IEC and the following apply. 3.1 communication layer CL layer that includes the network layer (layer 3) and the transport layer (layer 4) 4 Use case definitions and requirements 4.1 Overview The following subclauses provide an overview of all the kinds of reasonable communication use cases. 4.2 Identified use cases Use case 1: Multipurpose communication layer The communication layer shall be able to handle various message transmission types such as Diagnostics, Multi Media or Inter ECU communication. However, usage purposes are not limited to the ones stated above. ISO 2010 All rights reserved 1

8 SS-ISO :2010 (E) ISO :2010(E) Provläsningsexemplar / Preview a) Transmit messages with known data length: Message transmission where the length of the transmitted message is known by the application. This kind of feature applies to most known applications (e.g. ECU programming, diagnostics, etc.). b) Transmit messages with unknown but finite data length: The final message length is unknown at start of message transmission. However, the data shall be finite in order to keep the transport layer implementation manageable. The feature might be used for any data streaming applications. c) Additional acknowledgement with retry mechanism: A message transmission is acknowledged (positive / negative) once it is completed. In addition, a retry mechanism might be supported, where the message transmission is being repeated at the detected first wrong byte position. This feature might be used for, e.g., Inter ECU communication mechanism. d) Routing data on the fly: Gateway mechanism, where the data are already transmitted onto the target subnet, while it is still in the process of being received on the source subnet. e) Support of dynamic frame length: Variable payload length (PDU_Size) in a single FlexRay frame, e.g. for optimized gateway handling in regard of buffer requirements. Possible applications could be routing data on the fly or data streaming Use case 2: Optimize flash programming time a) Flexible bandwidth usage: Achieve optimized message transmission independent of the given network bandwidth assignment. b) Support of parallel diagnostic communication: The communication layer shall be capable to support concurrent ECU programming events Use case 3: Optimize gateway implementations a) Routing data on the fly: See d) in use case 1 (4.2.1). b) Receive and forward: Allow to transfer a message from a given network onto FlexRay (and vice versa) without re-mapping payload information of a frame, where only the PCI information needs to be adapted. c) Optimize addressing scheme: See d) in use case 1 (4.2.1) Use case 4: Communication layer definition The communication layer definition shall be independent of static or dynamic segment usage as far as possible. 2 ISO 2010 All rights reserved