ISO TS 18234-2-2013 Intelligent transport systems - Traffic and travel information via transport protocol experts group generation 1 (TPEG1) binary data format .pdf

1、 Reference number ISO/TS 18234-2:2013(E) ISO 2013TECHNICAL SPECIFICATION ISO/TS 18234-2 Second edition 2013-10-15 Corrected version 2013-11-01Intelligent transport systems Traffic and travel information via transport protocol experts group, generation 1 (TPEG1) binary data format Part 2: Syntax, sem

2、antics and framing structure (TPEG1-SSF) Systmes intelligents de transport Informations sur le trafic et le tourisme via les donnes de format binaire du groupe dexperts du protocole de transport, gnration 1 (TPEG1) Partie 2: Structure de syntaxe, de smantique et de cadrage (TPEG1-SSF) ISO/TS 18234-2

3、:2013(E) COPYRIGHT PROTECTED DOCUMENT ISO 2013 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 intranet, without prior

4、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 Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerla

5、nd ii ISO 2013 All rights reservedISO/TS 18234-2:2013(E) ISO 2013 All rights reserved iiiContents Page Foreword . v Introduction . v 1 Scope 1 2 Normative references 1 3 Abbreviated terms . 2 4 Design principles . 3 4.1 TPEG transmission . 3 4.2 TPEG layer model 4 5 Conventions and symbols 6 5.1 Con

6、ventions . 6 5.1.1 Byte ordering . 6 5.1.2 Method of describing the byte-oriented protocol 6 5.1.3 Reserved data fields 6 5.2 Symbols 6 5.2.1 Literal numbers 6 5.2.2 Variable numbers 6 5.2.3 Implicit numbers 7 6 Representation of syntax . 7 6.1 General . 7 6.2 Data type notation . 7 6.2.1 Rules for

7、data type definition representation . 7 6.2.2 Description of data type definition syntax 9 6.3 Application dependent data types . 10 6.3.1 Data structures 11 6.3.2 Using templates as interfaces 12 6.3.3 Components . 13 6.4 Toolkits and external definition . 15 6.5 Application design principles 15 6.

8、5.1 Variable data structures . 15 6.5.2 Re-usable and extendable structures . 15 6.5.3 Validity of declarative structures . 15 7 TPEG data stream description . 16 7.1 Diagrammatic hierarchy representation of frame structure . 16 7.2 Syntactical Representation of the TPEG Stream . 16 7.2.1 TPEG trans

9、port frame structure 16 7.2.2 TPEG service frame template structure 17 7.2.3 Service frame of frame type = 0 . 17 7.2.4 Service frame of frame type = 1 . 17 7.2.5 TPEG service component frame multiplex . 18 7.2.6 Interface to application specific frames 18 7.3 Description of data on Transport level

10、21 7.3.1 Syncword . 21 7.3.2 Field length 21 7.3.3 Header CRC 21 7.3.4 Frame type . 21 7.3.5 Synchronization method. 22 7.3.6 Error detection . 22 7.4 Description of data on Service level 22 ISO/TS 18234-2:2013(E) iv ISO 2013 All rights reserved7.4.1 Encryption indicator 22 7.4.2 Service identificat

11、ion .22 7.5 Description of data on Service component level .23 7.5.1 Service component identifier .23 7.5.2 Field length .23 7.5.3 Service component frame header CRC .23 7.5.4 Service component frame data CRC23 Annex A (normative) Character tables 24 A.1 Character tables .24 A.2 Reference character

12、table index 24 Annex B (normative) Method for coding quantities of objects 25 B.1 Numag derivation .25 B.2 Numag table .26 Annex C (normative) CRC calculation 27 C.1 CRC calculation .27 C.2 ITU-T (formerly CCITT) CRC calculation in PASCAL .27 C.3 ITU-T (formerly CCITT) CRC calculation in C notation

13、28 Annex D (normative) Time calculation 29 D.1 Time calculation .29 D.2 Time calculation in C notation 29 Annex E (informative) A description of the TPEG byte-stream using C-type notation 32 E.1 Explanation .32 E.2 Definition of data elements .32 E.3 Definition of conditional expressions33 E.4 Byte-

14、stream representation of the TPEG hierarchy .33 E.4.1 Definition of nextbyte function .33 E.4.2 Definition of next_start_code function 33 E.4.3 Definition of tpeg_stream function 34 ISO/TS 18234-2:2013(E) ISO 2013 All rights reserved vForeword ISO (the International Organization for Standardization)

15、 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 repre

16、sented 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

17、 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 Internationa

18、l Standard requires approval by at least 75 % of the member bodies casting a vote. In other circumstances, particularly when there is an urgent market requirement for such documents, a technical committee may decide to publish other types of normative document: an ISO Publicly Available Specificatio

19、n (ISO/PAS) represents an agreement between technical experts in an ISO working group and is accepted for publication if it is approved by more than 50 % of the members of the parent committee casting a vote; an ISO Technical Specification (ISO/TS) represents an agreement between the members of a te

20、chnical committee and is accepted for publication if it is approved by 2/3 of the members of the committee casting a vote. An ISO/PAS or ISO/TS is reviewed after three years in order to decide whether it will be confirmed for a further three years, revised to become an International Standard, or wit

21、hdrawn. If the ISO/PAS or ISO/TS is confirmed, it is reviewed again after a further three years, at which time it must either be transformed into an International Standard or be withdrawn. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent r

22、ights. ISO shall not be held responsible for identifying any or all such patent rights. ISO/TS 18234-2 was prepared by the European Committee for Standardization (CEN) Technical Committee CEN/TC 278, Road transport and traffic telematics, in collaboration with ISO Technical Committee ISO/TC 204, Int

23、elligent transport systems, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement). This second edition cancels and replaces the first edition (ISO/TS 18234-2:2006). Clauses 5, 6 and 7 have been technically revised. ISO/TS 18234 consists of the following par

24、ts, under the general title Intelligent transport systems Traffic and travel information via transport protocol experts group, generation 1 (TPEG1) binary data format: Part 1: Introduction, numbering and versions (TPEG1-INV) Part 2: Syntax, semantics and framing structure (TPEG1-SSF) Part 3: Service

25、 and network information(TPEG1-SNI) Part 4: Road Traffic Message application (TPEG1-RTM) Part 5: Public Transport Information (PTI) application ISO/TS 18234-2:2013(E) vi ISO 2013 All rights reserved Part 6: Location referencing applications Part 7: Parking information (TPEG1-PK1) Part 8: Congestion

26、and travel-time application (TPEG1-CTT) Part 9: Traffic event compact (TPEG1-TEC) Part 10: Conditional access information (TPEG1-CAI) Part 11: Location Referencing Container (TPEG1-LRC) This corrected version of ISO 18234-2:2013 incorporates the following corrections: The quality of Figures 4 and 5

27、has been improved for legibility. ISO/TS 18234-2:2013(E) ISO 2013 All rights reserved viiIntroduction TPEG technology uses a byte-oriented data stream format, which may be carried on almost any digital bearer with an appropriate adaptation layer. TPEG messages are delivered from service providers to

28、 end-users, and are used to transfer application data from the database of a service provider to a users equipment. This Technical Specification describes the Service and Network Information Application, which provides a means of informing end-users about all possible services and their content whic

29、h are considered relevant by a service provider to either provide continuity of his services or inform the end-user about other related services. As stated in the design criteria, TPEG is a bearer independent system. Therefore some rules are established for the relation of information contents of th

30、e same service on different bearers. Also the mechanisms for following a certain service on one single bearer have to be defined. For the receiver it is essential to find an adjacent or similar service if it leaves the current reception area. Nonetheless, basic information describing the service its

31、elf is necessary. For the ease of the user, e.g. the service name, the service provider name, the operating time and many other hints are delivered by the TPEG-SNI application. General models for the hand-over and the referencing of services are developed and shown in detail. It is important to note

32、 that this Technical Specification is closely related to ISO/TS 18234-3 and thus they are dependent upon each other and must be used together. The brief history of TPEG technology development dates back to the European Broadcasting Union (EBU) Broadcast Management Committee establishing the B/TPEG p

33、roject group in autumn 1997 with the mandate to develop, as soon as possible, a new protocol for broadcasting traffic and travel-related information in the multimedia environment. TPEG technology, its applications and service features are designed to enable travel-related messages to be coded, decod

34、ed, filtered and understood by humans (visually and/or audibly in the users language) and by agent systems. One year later in December 1998, the B/TPEG group produced its first EBU specifications. Two Technical Specifications were released. ISO/TS 18234-2, this document, described the Syntax, Semant

35、ics and Framing Structure, which is used for all TPEG applications. ISO/TS 18234-4 (TPEG-RTM) described the first application, for Road Traffic Messages. Subsequently, CEN/TC 278/WG 4, in conjunction with ISO/TC 204, established a project group comprising the members of B/TPEG and they have continue

36、d the work concurrently since March 1999. Since then two further parts were developed to make the initial complete set of four parts, enabling the implementation of a consistent service. ISO/TS 18234-3 (TPEG-SNI) describes the Service and Network Information Application, which should be used by all

37、service implementations to ensure appropriate referencing from one service source to another. ISO/TS 18234-1 (TPEG-INV), completes the series, by describing the other parts and their relationship; it also contains the application IDs used within the other parts. In April 2000, the B/TPEG group relea

38、sed revised Parts 1 to 4, all four parts having been reviewed and updated in the light of initial implementation results. Thus a consistent suite of specifications, ready for wide scale implementation, was submitted to the CEN/ISO commenting process. In November 2001, after extensive response to the

39、 comments received and from many internally suggested improvements, all four parts were completed for the next stage: the Parallel Formal Vote in CEN and ISO. But a major step forward has been to develop the so-called TPEG-Loc location referencing method, which enables both map-based TPEG-decoders a

40、nd non map-based ones to deliver either map-based location referencing or human readable information. ISO/TS 18234-6 is now a separate specification and is used in association with the other parts of ISO/TS 18234 to provide comprehensive location referencing. Additionally, ISO/TS 18234-5, has been d

41、eveloped and been through the commenting process. This Technical Specification provides a full specification to the primitives used, framing, time calculation, numbers and to specific rules such as CRC calculation. ISO/TS 18234-2:2013(E) viii ISO 2013 All rights reservedDuring the development of the

42、 TPEG technology a number of versions have been documented and various trials implemented using various versions of the specifications. At the time of the publication of this Technical Specification, all parts are fully inter-workable and no specific dependencies exist. This Technical Specification

43、has the technical version number TPEG-SSF_3.0/003. TECHNICAL SPECIFICATION ISO/TS 18234-2:2013(E) ISO 2013 All rights reserved 1Intelligent transport systems Traffic and travel information via transport protocol experts group, generation 1 (TPEG1) binary data format Part 2: Syntax, semantics and fra

44、ming structure (TPEG1-SSF) 1 Scope This Technical Specification establishes the method of referencing used within a TPEG data-stream to allow a service provider to signal availability of the same service on another bearer channel or similar service data from another service. TPEG is a byte-oriented

45、stream format, which may be carried on almost any digital bearer with an appropriate adaptation layer. TPEG messages are delivered from service providers to end-users, and are used to transfer application data from the database of a service provider to a users equipment. The protocol is structured i

46、n a layered manner and employs a general purpose framing system which is adaptable and extensible, and which carries frames of variable length. This has been designed with the capability of explicit frame length identification at nearly all levels, giving greater flexibility and integrity, and permi

47、tting the modification of the protocol and the addition of new features without disturbing the operation of earlier client decoder models. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited ap

48、plies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO/IEC 7498-1, Information technology Open Systems Interconnection Basic Reference Model: The Basic Model ISO/IEC 8859-1, Information technology 8-bit single-byte coded graphic character

49、 sets Part 1: Latin alphabet No. 1 ISO/IEC 8859-2, Information technology 8-bit single-byte coded graphic character sets Part 2: Latin alphabet No. 2 ISO/IEC 8859-3, Information technology 8-bit single-byte coded graphic character sets Part 3: Latin alphabet No. 3 ISO/IEC 8859-4, Information technology 8-bit single-byte coded graphic character sets Part 4: Latin alphabet No. 4 ISO/IEC 8859-5, Information technology 8-bit single-byte coded graphic character sets Part 5: Latin/Cyrillic a