1、 Reference number ISO 15784-3:2008(E) ISO 2008INTERNATIONAL STANDARD ISO 15784-3 First edition 2008-10-15 Intelligent transport systems (ITS) Data exchange involving roadside modules communication Part 3: Application profile-data exchange (AP-DATEX) Systmes intelligents de transport (SIT) change de
2、donnes impliquant la communication par modules en bordure de route Partie 3: Profil dapplication-change de donnes (AP-DATEX) ISO 15784-3:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not b
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7、ail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2008 All rights reservedISO 15784-3:2008(E) ISO 2008 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 1 4 Abbreviated terms 4 5 General. 5 5.1 Open sys
8、tems interconnection (OSI) reference model. 5 5.2 Scenario. 5 6 Requirements 7 6.1 General Requirements 7 6.1.1 Stack definition . 7 6.1.2 Optional features 7 6.1.3 Compatibility . 7 6.2 Application layer requirements . 7 6.3 Presentation layer requirements. 7 6.4 Session layer requirements. 7 6.5 T
9、ransport layer requirements 7 Annex A (normative) Application profile for DATEX-ASN profile requirement list . 8 Annex B (informative) Compatibility with other application profiles 14 Bibliography . 15 ISO 15784-3:2008(E) iv ISO 2008 All rights reservedForeword ISO (the International Organization fo
10、r 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
11、 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. Internati
12、onal 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
13、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.
14、ISO 15784-3 was prepared by Technical Committee ISO/TC 204, Intelligent transport systems. ISO 15784 consists of the following parts, under the general title Intelligent transport systems (ITS) Data exchange involving roadside modules communication: Part 1: General principles and documentation frame
15、work of application profiles Part 3: Application profile-data exchange (AP-DATEX) ISO 15784-3:2008(E) ISO 2008 All rights reserved v Introduction The functional requirements for communication between a traffic management centre and roadside modules used for traffic management are varied because inte
16、rnationally there are many kinds of roadside modules for traffic management, such as signal controllers, dynamic message signs and vehicle detectors. In the development of standards for data exchanges between a traffic management centre and roadside modules used for traffic management, ISO/TC 204/WG
17、9 agreed that the concept of a single standard for all countries and devices might not be appropriate, but a set of standards for different types of roadside module might be more appropriate. As a result, ISO/TC 204/WG9 adopted the philosophy of producing profile documents to specify how data should
18、 be exchanged. In the development of this part of ISO 15784, reference was made to the existing standards about profiles, specifically NTCIP 8003 which is the US standard for a profile framework, and ISO/IEC TR 10000, which is a series of Technical Reports under the general title Information technol
19、ogy Framework and taxonomy of International Standardized Profiles. The purpose of a profile is to specify the use of one or more base standards to provide a requested function. Because there are multiple functional requirements to data exchange between a centre and the roadside modules, ISO 15784 de
20、fines multi-part profiles. This part of ISO 15784 defines only the application profile. End application data is defined in the data-registry. Each country should define lower layer profiles based on the internationally standardized protocols because each country has its own circumstance on communica
21、tion infrastructure. INTERNATIONAL STANDARD ISO 15784-3:2008(E) ISO 2008 All rights reserved 1 Intelligent transport systems (ITS) Data exchange involving roadside modules communication Part 3: Application profile-data exchange (AP-DATEX) 1 Scope The purpose of this part of ISO 15784 is to define an
22、 application profile referring ISO 14827 and other base standards. The application profile specified in this part of ISO 15784 is used to exchange data and messages in the following cases. a) Between a traffic management centre and roadside modules for traffic management. b) Between roadside modules
23、 used for traffic management. The scope of this part of ISO 15784 does not include the communication between roadside modules and in- vehicle units, in-vehicle communication, in-cabinet communication or motion video transmission from a camera or recorded media. 2 Normative references The following r
24、eferenced 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 8825-1:2002, Information technology ASN.1 encoding rules
25、: Specification of Basic Encoding Rules (BER), Canonical Encoding Rules (CER) and Distinguished Encoding Rules (DER) Part 1 ISO/IEC TR 10000-2:1998, Information technology Framework and taxonomy of International Standardized Profiles Part 2: Principles and Taxonomy for OSI profiles ISO 14827-2:2005,
26、 Transport information and control systems Data interfaces between centres for transport information and control systems Part 2: DATEX-ASN 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 application layer layer containing all functions needed
27、 for the distributed applications and not already provided by the presentation service NOTE The application layer constitutes layer 7 of the OSI model. ISO 15784-3:2008(E) 2 ISO 2008 All rights reserved3.2 base standard approved international standard or a related authoritative standard 3.3 Basic En
28、coding Rules BER standardized determination of data encoding to conform to the requirements of ISO 8824, ASN.1 NOTE The Basic Encoding Rules are given in ISO 8825. 3.4 centre computer or network that is required to meet a standardized communications interface over a fixed-point communications networ
29、k, regardless of whether it is the only system within the building or just one of many, or even if it is located in the field 3.5 client computer or application which requests and accepts data from a server computer or application using some kind of protocol 3.6 compatibility capability of two or mo
30、re items or components of equipment or material to exist and/or function in the same system or environment without modification, adaptation or mutual interference 3.7 data information before it is interpreted 3.8 datagram a self-contained unit of data transmitted independently of other datagram 3.9
31、data link layer layer that manages frames and performs error detection and correction NOTE The data link layer constitutes layer 2 of the OSI model. It can also be used to co-ordinate distribution of physical connections. 3.10 data packet entity of data that can be sent between end-application syste
32、ms in order to exchange information NOTE A data packet relates to the application layer of the OSI stack and may be broken into several pieces by lower layer protocols. 3.11 encoding rules rules which specify the representation during transfer of the values of ASN.1 types NOTE Encoding rules also en
33、able the values to be recovered from the representation, given knowledge of the type. 3.12 end-application process or program using the communications stack ISO 15784-3:2008(E) ISO 2008 All rights reserved 3 3.13 intelligent transport systems major national initiative to improve information, communi
34、cation and control technologies in order to improve the efficiency of surface transport 3.14 internet protocol network protocol offering a connectionless mode network service in the internet suite of protocols 3.15 message set of data grouped together for transmission 3.16 network layer layer that p
35、rovides functional and procedural means of transferring variable length data sequences from a source to a destination NOTE The network layer constitutes layer 3 of the OSI model. 3.17 open systems interconnection OSI reference model developed by ISO to enable different or similar systems to dialogue
36、 with one another NOTE 1 This model constitutes a reference framework for describing data exchanges. Each layer performs a service at the request of the adjacent higher layer, and in turn, requests more basic services from the lower layers. It is described in 7 layers. NOTE 2 Open systems interconne
37、ction (OSI) is an international effort to facilitate communications among computers of different manufacture and technology. 3.18 physical layer layer that defines the physical data transmission medium NOTE The physical layer constitutes layer 1 of the OSI model. 3.19 port logical channel in a commu
38、nications system NOTE UDP and TCP use port numbers to multiplex data packets from a variety of applications onto a single communications system. 3.20 port number identifier of an application-entity to a transport service in the internet suite of protocols NOTE The concept of port numbers is often pr
39、esent in OSI literature; however, port numbers are not inter-network standardized, but exist as local network conventions only. 3.21 presentation layer layer that converts data using different syntax NOTE The presentation layer constitutes layer 6 of the OSI model. ISO 15784-3:2008(E) 4 ISO 2008 All
40、 rights reserved3.22 profile standard that defines rules by only combining requirements of other standards NOTE An application profile is a profile that specifies the application, presentation, and session layers by referencing a group of other standards. 3.23 roadside modules terminal units control
41、led or monitored by a traffic management centre NOTE Roadside modules are usually installed at the roadside arena. 3.24 server computer or application which receives and responds to requests for data from client computers or applications using some kind of protocol 3.25 session layer layer that mana
42、ges the dialogue between end-user application processes including restart, termination, and checkpointing NOTE The session layer constitutes layer 5 of the OSI model. 3.26 transport layer layer that provides transparent transfer of data between end users NOTE The transport layer constitutes layer 4
43、of the OSI model. 3.27 transport profile set of services which are responsible for providing a virtually error-free, point to point connection so that host-A can send data packets to host-B and they will arrive uncorrupted NOTE Connection-oriented transport profiles can also ensure that the data pac
44、kets arrive in the correct order. 4 Abbreviated terms AP Application Profile ASN.1 Abstract Syntax Notation One ATM Asynchronous Transfer Mode DATEX-ASN Data Exchange in ASN.1 FHWA Federal Highway Administration FDDI Fiber Distributed Data Interface FSK Frequency Shift Keying FTP File Transfer Proto
45、col IEC International Electro-technical Commission ISO 15784-3:2008(E) ISO 2008 All rights reserved 5 ISO International Organization for Standardization OSI Open Systems Interconnection PICS Profile Implementation Conformance Statement PMPP Point to Multi Point Protocol PPP Point-to-Point Protocol (
46、RFC 1661) SFMP Simple Fixed Message Protocol SLIP Serial Line Internet Protocol SNMP Simple Network Management Protocol (RFC 1157) SONET Synchronous Optical Network STMF Simple Transportation Management Framework STMP Simple Transportation Management Protocol TCP Transmission Control Protocol (RFC 7
47、93) TFTP Trivial File Transfer Protocol TMP Transportation Management Protocols TR Technical Report UDP User Datagram Protocol (RFC 768) 5 General 5.1 Open systems interconnection (OSI) reference model The OSI reference model defines seven layers, each performing a particular role in the transmissio
48、n of data over a medium. Application profiles define the upper three layers. The top layer of the OSI seven layer model, the application layer, handles issues like network transparency, resource allocation and problem partitioning. The application layer is concerned with the users view of the networ
49、k. The second highest layer in the OSI seven layer model, also known as layer 6 or the presentation layer, performs functions such as text compression, code conversion, or format conversion to try to smooth out differences between hosts. Layer 5, the session layer, handles security and creation of the session. 5.2 Scenario AP-DATEX should be used when there are connections between a traffic management centre and roadside modules used for traffic management. This part of ISO 15784 deals with the interface descri
