1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 13183:2012Intelligent transport systems Communications access forland mobiles (CALM) Usingbroadcast communicationsBS ISO 13183:2012 BRITISH STANDARDNational forewordThis B
2、ritish Standard is the UK implementation of ISO 13183:2012.The UK participation in its preparation was entrusted to TechnicalCommittee EPL/278, Road transport informatics.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purpor
3、t to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 71184 8ICS 03.220.01; 35.240.60Compliance with a British Standard cannot confer immunity fromlegal ob
4、ligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2013.Amendments issued since publicationDate Text affectedBS ISO 13183:2012Reference numberISO 13183:2012(E)ISO 2012INTERNATIONAL STANDARD ISO13183First edition2012-05-01Inte
5、lligent transport systems Communications access for land mobiles (CALM) Using broadcast communications Systmes intelligents de transport Accs aux communications des services mobiles terrestres (CALM) CALM utilisant les communications de diffusion gnrale BS ISO 13183:2012ISO 13183:2012(E) COPYRIGHT P
6、ROTECTED DOCUMENT ISO 2012 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO
7、s 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 Switzerland ii ISO 2012 All rights reservedBS ISO 13183:2012ISO 13183:2012(E) ISO 2012 All rights re
8、served iiiContents Page Foreword iv Introduction . v 1 Scope 1 2 Conformance . 1 2.1 General . 1 2.2 Public telecoms network conformance . 1 3 Normative references 2 4 Terms and definitions . 2 5 Symbols and abbreviated terms 3 6 Background 4 6.1 Proprietary and standardized connectivity protocols .
9、 4 7 Requirements of the MMAE 5 7.1 General . 5 7.2 Adoption of broadcast standards and internationally adopted practices . 5 7.3 CALM architecture . 5 7.4 CALM networking protocols 6 7.5 CALM medium service access points . 6 7.6 ITS station management . 6 7.7 CALM using public wireless networks 7 7
10、.8 Interface medium management . 7 7.9 Establishment of a medium specific session by the MMAE . 7 8 Medium access control (MAC) . 13 8.1 CALM broadcast communications MMAE service primitives. 13 8.2 Identification of the broadcast communication MMAE . 14 8.3 CALM session connection . 15 8.4 CALM ses
11、sion disconnection 16 8.5 Change of broadcast communications connection state . 16 8.6 Retrieval of the medium status 16 8.7 Broadcast communications specific connection aspects 17 8.8 Broadcast communications session disconnection . 17 9 Test methods . 17 10 Declaration of patents and intellectual
12、property 17 Bibliography 18 BS ISO 13183:2012ISO 13183:2012(E) iv ISO 2012 All rights reservedForeword 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 carrie
13、d 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. IS
14、O 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 Internatio
15、nal 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 ele
16、ments 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 13183 was prepared by Technical Committee ISO/TC 204, Intelligent transport systems. BS ISO 13183:2012ISO 13183:2012(E) ISO 2012 All rights reserved vIntro
17、duction This International Standard is part of a family of International Standards for CALM (“Communications Access for Land Mobiles“) which specify a common architecture, network protocols and communications interface definitions for wireless communications using different bearer technologies, e.g.
18、 2ndgeneration cellular, cellular 3rdgeneration, 5 GHz microwave, 60 GHz millimetre-wave, mobile wireless broadband, infra-red communications, and satellite. These wireless communications interfaces are designed to provide parameters and protocols for broadcast, point-to-point, vehicle-vehicle, and
19、vehicle-point communications in the ITS sector. This International Standard provides definitions and procedures for the establishment, maintenance and termination of an ITS communications session within a CALM system environment using received public network broadcast communications messages. Such b
20、roadcast communications can be delivered by a variety of media that could include satellite, digital audio broadcast (e.g. ISDBss and DAB), digital video broadcast (e.g. DVB and ISDB) or any other public communications broadcast service. Some of the media developed explicitly for CALM include a full
21、y defined broadcast capability, but this International Standard covers only those media that have not been developed specifically for CALM. Protocols for broadcasts that use new dedicated private ITS communications are fully defined in the standards developed for these new communications media. CALM
22、 standards are explicitly designed to enable quasi-continuous communications as well as communications of protracted duration between vehicles and service providers, and between vehicles. The fundamental advantage of the CALM concept over traditional systems is the ability to support media-independe
23、nt handover (MIH), also referred to as heterogeneous or vertical handover, between the various media supported by CALM (e.g., cellular, microwave, mobile wireless broadband, infra-red, DSRC, and satellite). Selection policies are supported that include user preferences and media capabilities in maki
24、ng decisions as to which medium to use for a particular session, and when to hand over between media or between service providers on the same medium. These handover mechanisms are defined within the CALM architecture International Standard, ISO 21217, the CALM IPv6 networking protocols International
25、 Standard, ISO 21210, the CALM medium service access points International Standard, ISO 21218, and the CALM station management International Standard, ISO 24102. Handovers between access points using the same technology and service provider use mechanisms that are defined within the particular mediu
26、m-specific CALM standard. Broadcast communications using public networks will typically be used where large numbers of users are running applications intended to receive the same information. Examples of broadcast information include incremental map-update information, ephemeral information on road
27、conditions including traffic and weather conditions, and the current road use charge that is applied to specific sections of road. Furthermore, GNSS location information can be routed to relevant applications using this protocol. Broadcasting this information is very efficient spectrally, rather tha
28、n sending the same information individually to thousands of vehicles via point-to-point communications: the transmission costs could be shared between all the users. The broadcast medium can also be used to carry paging messages. Strictly speaking, these are unicast, but take advantage of the wide g
29、eographical coverage of the broadcast system at the physical layer. There is no embedded means for the individual receivers to acknowledge correct receipt of broadcast transmissions in real time, and the intended recipient system could be powered down at the time of transmission. This International
30、Standard identifies techniques that can be used to overcome these limitations. BS ISO 13183:2012ISO 13183:2012(E) vi ISO 2012 All rights reservedThe time of transmission is determined by the information supplier and is not under the control of the recipient. Therefore it is possible that the ITS sta
31、tion could be powered down at the time of the transmission, in which case the information will not be received. For example, it is conceivable that there might be overnight transmission of map updates. This International Standard defines a “sleep mode”, which would be appropriate for a parked car wh
32、ich would normally require the ITS system to be powered down. However, the (very low power consumption) broadcast receiver and its associated “Medium Management Adaptation Entity” (MMAE) would remain powered to listen for, and store, relevant information transmissions. Any relevant information could
33、 be passed to the appropriate applications within the ITS station when the ITS station is next powered up. The following three possible methods have been identified to allow this operation: a) The MMAE provides storage for all information received over the logical ITS channel, whilst the ITS is in s
34、leep mode, for subsequent transfer to the relevant application via intermediate CALM protocols. b) The MMAE uses selective storage of information received, following a filtering process. The filtering would be achieved by the application alerting the MMAE on the types of application that are of inte
35、rest. The application type information will be included within the information header. The MMAE reads the application type information in the header, and stores only the selected information. c) Filtering and buffering of information, whilst a wake-up message is sent to the rest of the ITS station s
36、o that the information being received can be passed to the application for immediate processing. The application would instruct the ITS station to return to sleep mode, once all the information has been received and processed. The wake-up process in a) above is not currently supported by the relevan
37、t CALM standards, so this mode is not currently supported. The inclusion of this function in the MMAE is not mandated. However, each of these arrangements would greatly increase the probability that broadcast information will be received by a large proportion of the users. As noted above, the broadc
38、ast medium does not include a return path. However, reliable information transfer can be supported by using an alternative medium for the return channel. This can be a very sensible approach where there is significant asymmetry, with large amounts of information downloaded with very simple acknowled
39、gement messages to be returned. Bi-directional satellite communications in the CALM environment are specified in ISO 29282. BS ISO 13183:2012INTERNATIONAL STANDARD ISO 13183:2012(E) ISO 2012 All rights reserved 1Intelligent transport systems Communications access for land mobiles (CALM) Using broadc
40、ast communications 1 Scope This International Standard specifies the architectural communications framework of intelligent transport systems (ITS) for the family of communications access for land mobiles (CALM) related International Standards. The architecture is described in an abstract way with se
41、veral graphical views and examples. The graphical representations partly follow the ISO open systems interconnection (OSI) principles. In addition to the requirements specified within this International Standard, a number of notes and examples are provided to illustrate the CALM concept. Wherever pr
42、acticable, this International Standard has been developed by reference to suitable extant International Standards, adopted by selection. The architecture provides for regional variations where regulations differ in different countries and regions. 2 Conformance 2.1 General Conformance declarations f
43、or the various parts of a CALM-compliant system shall be based on the appropriate CALM related International Standards as listed in Clause 3: ISO 21210, ISO 21217, ISO 21218, ISO 24102, ISO 25111, ISO 29281. 2.2 Public telecoms network conformance Broadcast communications media are defined in variou
44、s standards set by a variety of standardization fora. This International Standard does not require conformance to any specific broadcast standard, but in order to claim compliance with this International Standard, a system shall declare with which broadcast standards it complies. The following are e
45、xamples of systems that are already used, or can be used, for ITS solutions in certain regions: ITU-R BS.1194-2, Systems for multiplexing frequency modulation (FM) sound broadcasts with a sub-carrier data channel having a relatively large transmission capacity for stationary and mobile reception ITU
46、-R BO.1408-1, Transmission system for advanced multimedia services provided by integrated services digital broadcasting in a broadcasting-satellite channel ITU-R BO.1516 System D, Digital multiprogramme television systems for use by satellites operating in the 11/12 GHz frequency range ITU-R BT.1306
47、-4 System C, Error correction, data framing modulation and emission methods for digital terrestrial television broadcasting ITU-R BT.1833, Multimedia System C, Broadcasting of multimedia and data applications for mobile reception by handheld receivers BS ISO 13183:2012ISO 13183:2012(E) 2 ISO 2012 Al
48、l rights reserved ITU-R BT.1833, Multimedia System F, Broadcasting of multimedia and data applications for mobile reception by handheld receivers ITU-R BT.1833, Multimedia system M, Broadcasting of multimedia and data applications for mobile reception by handheld receivers ITU-R BS.1114-6, System F,
49、 Systems for terrestrial digital sound broadcasting to vehicular, portable and fixed receivers in the frequency range 30-3,000 MHz 3 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 21210, Intelligent transport systems Communications access for land mobiles (CALM) IPv6 Networking ISO 21217, Intell
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