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1、 Reference number ISO 21214:2006(E) ISO 2006 INTERNATIONAL STANDARD ISO 21214 First edition 2006-07-01 Intelligent transport systems Continuous air interface, long and medium range (CALM) Infra-red systems Systmes intelligents de transport Interface dair continue, gamme longue et moyenne (CALM) Syst
2、mes infrarouges Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/03/2007 22:46:27 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 21214:2006(E) PDF dis
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6、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 ISOs member body in the country of
7、 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 2006 All rights reserved Copyright International Organization for Standardization Provided by IHS under license
8、with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/03/2007 22:46:27 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 21214:2006(E) ISO 2006 All rights reserved iii Dedication Exceptionally this International Standard is dedicated to the late
9、 Dipl. Ing. Helmut Strasser in grateful recognition of his leadership as the editor and project leader of ISO 21214, and for his commitment and services over more than a decade to meet the challenges of international standardization in the rapidly changing arena of ITS technology. Copyright Internat
10、ional Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/03/2007 22:46:27 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 21214:2006(E) iv ISO 2006 All rights reserved Contents
11、Page Dedicationiii Foreword.vii Introduction .viii 1 Scope1 2 Conformance.2 3 Normative references .2 4 Terms and definitions.2 4.1 General.2 4.2 Optical parmeters4 5 Symbols and abbreviated terms8 6 Requirements: transmitter and receiver parameters 10 6.1 Transmitter wavelengths and bandwidths.10 6
12、.2 Radiated power .10 6.2.1 Radiated power limits.10 6.2.2 Transmitter classes 11 6.3 Receiver wavelengths and bandwidths11 6.4 Receiver class .12 7 Modulation and coding.13 7.1 Generic modulation parameters13 7.1.1 Wake-up signal13 7.1.2 Transmitter generic modulation parameters13 7.1.3 Receiver ge
13、neric modulation parameters 13 7.2 Communications profiles.13 7.3 Profile 0 (base profile) and profile 1 (default profile) modulation14 7.4 Profiles 2 to 6.15 8 Directivity and communication zones 16 8.1 Directivity parameters 16 8.2 Communication zones17 8.2.1 Basic beam 17 8.2.2 Communication zone
14、 construction.17 8.2.3 Communication zone shortcuts 18 9 Frames and windows20 9.1 General structure 20 9.2 Frame20 9.2.1 Frame structure.20 9.2.2 Frame synchronisation signal (F-Sync)21 9.3 Windows.21 9.3.1 Window structure and types21 9.3.2 Window synchronisation (W-Sync).22 9.3.3 Management window
15、22 9.3.4 Private window24 9.3.5 Broadcast window 25 9.3.6 Multicast window 26 9.3.7 Spare window27 9.3.8 Compatibility window.27 9.3.9 Wake-up window.27 9.4 Command alert (CA) .27 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1
16、111111001, User=Wing, Bernie Not for Resale, 04/03/2007 22:46:27 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 21214:2006(E) ISO 2006 All rights reserved v 9.5 Summary 29 10 MAC commands 31 10.1 General. 31 10.2 MAC commands related to the frame and window organisatio
17、n. 31 10.2.1 frame organisation table (MC-FOT). 31 10.2.2 When generated 32 10.2.3 Effect on receipt 32 10.2.4 frame organisation table update (MC-FOT U) 33 10.2.5 frame organisation table steady (MC-FOT S). 34 10.2.6 Broadcast (MC-BRC) 34 10.2.7 Re-establish session (MC-REST) 35 10.2.8 Session re-e
18、stablishment confirmed (MC-RESC) . 35 10.2.9 Session re-establishment denied (MC-RESD) . 36 10.2.10 Kill all (MC-KIA). 36 10.2.11 Kill slave (MC-KIS) 37 10.2.12 De-register (MC-DREG) 37 10.2.13 Suspend all (MC-SUA) 38 10.2.14 Suspend slave (MC-SUS). 39 10.2.15 Free airtime (MC-FAT) 39 10.3 MAC comma
19、nds related to flow control. 40 10.3.1 Command not supported (MC-CNS). 40 10.3.2 Token (MC-TKN) 40 10.3.3 Block start (MC-BLS) 41 10.3.4 Control channel block start (MC-CCBS). 41 10.3.5 IEEE-frame block start (MC-FBS) 42 10.3.6 Start of MAC control block (MC-SMC) 42 10.3.7 Packet start (MC-PAS) 43 1
20、0.3.8 Packet end (MC-PAE) . 43 10.3.9 Block end (MC-BLE) . 44 10.3.10 Transmission acknowledged (MC-TAck) 44 10.3.11 Transmission acknowledged therefore “handover mechanisms” are included. Handover mechanisms need to be defined at two levels: Firstly, handover mechanisms within the same technology a
21、nd service provider. These handover mechanisms are defined within the frequency-specific CALM International Standards. Secondly, handover mechanisms at the application level, for use where either the technology or the service provider changes. These handover mechanisms will be defined within the CAL
22、M architecture International Standard (ISO 21217), within the CALM networking protocols International Standard (ISO 21210) and within the CALM lower layer SAP International Standard (ISO 21218). Applications include the update of roadside telemetry and messaging, internet, image and video transfer,
23、infotainment, traffic management, monitoring and enforcement in mobile situations, route guidance, car-to-car safety messaging, maintenance management, and “yellow page” services. For medium- and long-range high- speed roadside/vehicle transactions such as on-board web access, broadcast and subscrip
24、tion services, entertainment, yellow page and booking transactions, etc., the functional characteristics of such systems require contact over significantly longer distance than is feasible or desirable for DSRC, and often for significantly longer connection periods in some circumstances, continuous
25、communication. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/03/2007 22:46:27 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO
26、 21214:2006(E) ISO 2006 All rights reserved 1 Intelligent transport systems Continuous air interface, long and medium range (CALM) Infra-red systems 1 Scope This International Standard determines the air interface using infra-red systems at 820 nm to 1 010 nm. It provides protocols and parameters fo
27、r medium-range, medium- to high-speed wireless communications in the ITS sector using infra-red systems. Such links are required for quasi-continuous, prolonged or short communications between vehicles and the roadside, between vehicles, and between mobile equipment and fixed infrastructure points,
28、over medium and long ranges. Vehicles may be moving or stationary. Wherever practicable, this International Standard has been developed by reference to suitable extant International Standards, adopted by selection. Required regional variations are provided. Due account is given to, and use made of,
29、any relevant parts of appropriate communications systems, such as global positioning systems (GPS), digital audio broadcasting (DAB), digital video broadcasting (DVB), radio local area networks (RLANs), digital data broadcasting (DDB), TETRA, FM subcarrier, mobile broadband systems (MBS, W-ATM), int
30、ernet protocols, and dedicated short range communication (DSRC). The International Standard: supports data rates of 1 Mbit/s up to 128 Mbit/s (it may support higher data rates); supports vehicle speeds up to a minimum of 200 km/h (closing speeds could be double this value); defines or references env
31、ironmental parameters relevant to link operation; supports communication distances up to 100 m (it may support longer communication distances of 300 m to 1 000 m); supports latencies and communication delays in the order of milliseconds; is compliant to regional/national regulatory parameters; may s
32、upport other regional/national parameters as applicable. Application-specific requirements are outside the scope of this International Standard. These requirements will be defined in the CALM management and upper layer standards and in application standards. Application-specific upper layers are not
33、 included in this International Standard, but will be driven by application standards (which may not be technology specific). Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/03/200
34、7 22:46:27 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 21214:2006(E) 2 ISO 2006 All rights reserved 2 Conformance Systems claiming conformance with this International Standard shall meet the specifications herein. 3 Normative references The following referenced docu
35、ments 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 8802-11, Information technology Telecommunications and information exc
36、hange between systems Local and metropolitan area networks Specific requirements Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications IEC 60050-845, International Electrotechnical Vocabulary. Lighting IEC 60825-1, Safety of laser products Part 1: Equipment classi
37、fication, requirements and users guide 4 Terms and definitions For the purposes of this document, the following terms and definitions apply. 4.1 General 4.1.1 broadcast window BcW window used to broadcast information to slaves, even to those which have not yet performed the “registration process” 4.
38、1.2 chip smallest information unit communicated over the link NOTE Depending on the chosen coding, one information bit may be represented by one or more consecutive chips. 4.1.3 communication profile specific set of data rate, modulation and flow control 4.1.4 communication zone spatial zone in whic
39、h two CALM-IR units are able to communicate with acceptable performance 4.1.5 compatibility window CmpW enables non-CALM-IR systems that follow certain rules to co-exist with a CALM-IR system without harmful interference 4.1.6 default data rate data rate used in the “default communications profile”
40、Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/03/2007 22:46:27 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 21214:2006(E) ISO 2006 All rights res
41、erved 3 4.1.7 default communications profile communications profile used unless another communications profile is successfully negotiated 4.1.8 flush byte 8 bit sequence used to denote the end of the main body of the information to be transmitted using the HHH(1,13) coding procedure 4.1.9 forward di
42、rection communication flow from master to slave EXAMPLES forward link, forward window 4.1.10 frame length indicator Flen indicator is used to calculate the frame length from the last “slot index” 4.1.11 frame organisation table FOT table which carries all organisation data of the TDMA frame 4.1.12 f
43、ree airtime indicator FATI indicator which signals that “free airtime” follows the current frame NOTE This airtime may be used by units not being a slave of the current master to establish “secondary mastership”. 4.1.13 guard time TG time period preceding a “command alert” (CA) in certain cases in o
44、rder to allow the automatic gain control of the receivers to resettle 4.1.14 HHH(1,13) code special run length limited code with d = 1 and k = 13 used in the CALM-IR communications profiles 2 to 6 4.1.15 management window first window in a CALM-IR frame, which carries all organisation information fo
45、r the current frame 4.1.16 master identifier MID code which uniquely identifies a CALM-IR master 4.1.17 multicast window McW window used for communication from master to multiple slaves, forward direction only 4.1.18 private window window which carries the information exchange between a master and a
46、 specific slave Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/03/2007 22:46:27 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 21214:2006(E) 4 ISO 2
47、006 All rights reserved 4.1.19 registration phase phase during which a master identifies devices newly entering its communication zone 4.1.20 slave device that is under the control of another device 4.1.21 spare window SpW window, not allocated to a slave, which reserves airtime for any slaves regis
48、tering during the current frame in order to enable the master to instantly allocate them a private window without the need for frame reorganisation 4.1.22 slot index index used to count time slots 4.1.23 TDMA frame time (division multiple access) structure based on a train of consecutive time slots (at least one) 4.1.24 time slot subunit of a TDMA frame 4.1.25 temporary identifier TempID identifier used for addressing the slave de