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1、BRITISH STANDARD BS ISO 21214:2006 Intelligent transport systems Continuous air interface, long and medium range (CALM) Infra-red systems ICS 03.220.01; 35.240.60 ? Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 13:27:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 21214:2006 This Briti
2、sh Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2006 BSI 2006 ISBN 0 580 48963 9 National foreword This British Standard reproduces verbatim ISO 21214:2006 and implements it as the UK national standard. The UK participation in its preparation w
3、as entrusted to Technical Committee EPL/278, Road transport informatics, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to i
4、n this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of
5、a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or propo
6、sals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to viii, pages 1 to 106, an inside back cover and a back
7、 cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 13:27:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 21214:200
8、6(E) 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) Systmes infrarouges BS ISO 21214:2006 Licens
9、ed Copy: sheffieldun sheffieldun, na, Sat Nov 25 13:27:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 13:27:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iii Dedication Exceptionally this International Standard is dedicated to the late Dipl. I
10、ng. 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. BS ISO 21214:2006 Licensed
11、 Copy: sheffieldun sheffieldun, na, Sat Nov 25 13:27:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv ISO 2006 All rights reserved Contents 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 parmet
12、ers4 5 Symbols and abbreviated terms8 6 Requirements: transmitter and receiver parameters 10 6.1 Transmitter wavelengths and bandwidths.10 6.2 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
13、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 generic 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
14、 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 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 synchron
15、isation 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 window22 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 Com
16、mand alert (CA) .27 BS ISO 21214:2006 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 13:27:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI v 9.5 Summary 29 10 MAC commands 31 10.1 General. 31 10.2 MAC commands related to the frame and window organisation. 31 10.2.1 frame organisation table (MC
17、-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-establishment confirmed (MC-RESC) . 35 10.
18、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 commands related to flow control. 40 10.3.1 Co
19、mmand 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 10.3.8 Packet end (MC-PAE) . 43 10.3.9 Blo
20、ck 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 and service provider. These handover mecha
21、nisms 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 CALM architecture International Standard (IS
22、O 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, infotainment, traffic management, monitor
23、ing 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 subscription services, entertainment, yellow page
24、 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 communication. BS ISO 21214:2006 Licensed
25、 Copy: sheffieldun sheffieldun, na, Sat Nov 25 13:27:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 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
26、nm to 1 010 nm. It provides protocols and parameters for 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 bet
27、ween mobile equipment and fixed infrastructure points, 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 a
28、re provided. Due account is given to, and use made of, 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
29、 subcarrier, mobile broadband systems (MBS, W-ATM), internet 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
30、 could be double this value); defines or references environmental 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 comp
31、liant to regional/national regulatory parameters; may support 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 applicati
32、on standards. Application-specific upper layers are not included in this International Standard, but will be driven by application standards (which may not be technology specific). BS ISO 21214:2006 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 13:27:13 GMT+00:00 2006, Uncontrolled Copy, (c
33、) BSI 2 2 Conformance Systems claiming conformance with this International Standard shall meet the specifications herein. 3 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undate
34、d references, the latest edition of the referenced document (including any amendments) applies. ISO/IEC 8802-11, Information technology Telecommunications and information exchange between systems Local and metropolitan area networks Specific requirements Part 11: Wireless LAN Medium Access Control (
35、MAC) and Physical Layer (PHY) specifications IEC 60050-845, International Electrotechnical Vocabulary. Lighting IEC 60825-1, Safety of laser products Part 1: Equipment classification, requirements and users guide 4 Terms and definitions For the purposes of this document, the following terms and defi
36、nitions 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” 4.1.2 chip smallest information unit communicated over the link NOTE Depending on the chosen coding, one information bit may be
37、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 which two CALM-IR units are able to communicate with acceptable performance 4.1.5 compatibility window CmpW enables non-CALM-IR sy
38、stems 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” BS ISO 21214:2006 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 13:27:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 3
39、 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 direction
40、 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 free air
41、time 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 order to
42、 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 for the c
43、urrent 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 specif
44、ic slave BS ISO 21214:2006 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 13:27:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 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 anot
45、her device 4.1.21 spare window SpW window, not allocated to a slave, which reserves airtime for any slaves registering 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 ti
46、me 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 device while it resides in the communication environment
47、 of the master NOTE Each time the slave registers in a communication zone, a new TempID is created. 4.1.26 wake-up window WuW special case of a broadcast window which is used to “wake-up” sleeping units entering the communication zone of an active master 4.1.27 window smallest addressable time span
48、of a CALM-IR frame which may consist of one or multiple time slots 4.2 Optical parmeters 4.2.1 radiant power radiant flux e power emitted, transmitted or received in the form of radiation NOTE 1 The unit is the watt (W). NOTE 2 Adapted from IEC 60050 (845-01-24). BS ISO 21214:2006 Licensed Copy: she
49、ffieldun sheffieldun, na, Sat Nov 25 13:27:13 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 5 4.2.2 radiant intensity Ie quotient of the radiant flux de leaving the source and propagated in the element of solid angle d containing the given direction, by the element of solid angle e e d I d = NOTE 1 Unit: W/sr (watts per steradian). NOTE 2 Adapted from IEC 60050 (845-01-30). 4.2.3 irradiance Ee quotient of the radiant flux de incide