1、November 2005DEUTSCHE NORM Normenausschuss Kraftfahrzeuge (FAKRA) im DINPreisgruppe 12DIN Deutsches Institut f r Normung e.V. Jede Art der Vervielf ltigung, auch auszugsweise, nur mit Genehmigung des DIN Deutsches Institut f r Normung e. V., Berlin, gestattet.ICS 35.100.10; 35.240.60? G 9571365www.d
2、in.deXDIN EN 12253Stra entransport und Verkehrstelematik (RTTT) Nahbereichskommunikation FahrzeugBake (DSRC) Bit bertragungsschicht f r die Frequenz 5,8 GHz;Englische Fassung EN 12253:2004Road transport and traffic telematics Dedicated shortrange communication Physical layer using microwave at 5,8 G
3、Hz;English version EN 12253:2004Tlmatique des transports routiers Communication courte porte vhicule/infrastructure Couche physique utilisant les microondes 5,8 GHz;Version anglaise EN 12253:2004Alleinverkauf der Normen durch Beuth Verlag GmbH, 10772 Berlinwww.beuth.deGesamtumfang 19 SeitenB55EB1B3E
4、14C22109E918E8EA43EDB30F09CC9B7EF8DD9NormCD - Stand 2007-03 DIN EN 12253:2005-11 2 Nationales Vorwort Diese Europische Norm wurde im Komitee CEN TC278 Straenverkehrstelematik“ unter deutscher Mitarbeit ausgearbeitet. Fr die deutsche Mitarbeit ist der Arbeitskreis AK9 des Gemeinschaftskomitees GK 717
5、 Straenverkehrstelematik“ im Normenausschuss Kraftfahrzeuge (FAKRA) zustndig. Das Prsidium des DIN hat mit Prsidialbeschluss 13/1983 festgelegt, dass Deutsche Normen, deren Inhalt sich auf internationale Arbeitsergebnisse der Informationsverarbeitung grndet, in Ausnahmefllen und unter bestimmten Bed
6、ingungen allein in englischer Sprache verffentlicht werden drfen. Diese Bedingungen sind fr diese Norm erfllt. B55EB1B3E14C22109E918E8EA43EDB30F09CC9B7EF8DD9NormCD - Stand 2007-03 EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 12253July 2004ICS 35.240.60 Supersedes ENV 12253:1997English versionRo
7、ad transport and traffic telematics - Dedicated short-rangecommunication - Physical layer using microwave at 5,8 GHzTlmatique des transports routiers - Communication courte porte vhicule/infrastructure - Couche physiqueutilisant les micro-ondes 5,8 GHzStraentransport- und Verkehrstelematik (RTTT) -N
8、ahbereichskommunikation Fahrzeug-Bake (DSRC) -Bitbertragungsschicht fr die Frequenz 5,8 GHzThis European Standard was approved by CEN on 23 April 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status
9、of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A versio
10、n in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, F
11、inland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR N
12、ORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2004 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12253:2004: EB55EB1B3E14C22109E918E8EA43EDB30F09CC9B7EF8DD9NormCD - Stand 2007-03 EN 12253:2004 (E) 2 Contents page For
13、eword3 Introduction .4 1 Scope5 2 Normative references5 3 Terms and definitions .5 3.1 General definitions 5 3.2 Downlink parameters 6 3.3 Uplink parameters .8 4 Abbreviations.10 5 DSRC link parameters.11 5.1 General11 5.2 Downlink parameters 11 5.3 Uplink parameters .14 Annex A (informative) A-devi
14、ations16 Bibliography 17 B55EB1B3E14C22109E918E8EA43EDB30F09CC9B7EF8DD9NormCD - Stand 2007-03 EN 12253:2004 (E) 3 Foreword This document (EN 12253:2004) has been prepared by Technical Committee CEN/TC 278 “Road Transport and Traffic Telematics”, the secretariat of which is held by NEN. This European
15、 Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2005, and conflicting national standards shall be withdrawn at the latest by January 2005. This document supersedes ENV 12253:1997 According to the CEN/C
16、ENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, M
17、alta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. B55EB1B3E14C22109E918E8EA43EDB30F09CC9B7EF8DD9NormCD - Stand 2007-03 EN 12253:2004 (E) 4 Introduction This document replaces ENV 12253. In order to facilitate migration from European Pre-s
18、tandard (ENV) to European Standard, equipment procured and installed in accordance with ENV 12253 has been considered when drafting this document. This document forms part of a series of documents defining the framework of a Dedicated Short Range Communication (DSRC) link in the Road Transport and T
19、raffic Telematics (RTTT) environment. The communication requirements of many RTTT applications can be fulfilled by DSRC. The DSRC Standards enable compliant communication systems to serve multiple RTTT applications in parallel. The small service areas and severe real-time constraints require a speci
20、fic protocol architecture leading to the reduced protocol stack shown in Figure 1, consisting of the Application Layer, the Data Link Layer, and the Physical Layer. Such an architecture is very common for real-time environments. This document deals with the physical layer of the DSRC protocol stack.
21、 Figure 1 DSRC protocol stack The following set of documents for the DSRC link is issued by CEN: EN 12253 Road transport and traffic telematics - Dedicated short-range communication - Physical layer using microwave at 5,8 GHz EN 12795 Road transport and traffic telematics - Dedicated Short Range Com
22、munication (DSRC) - DSRC data link layer: medium access and logical link control EN 12834 Road transport and traffic telematics - Dedicated Short Range Communication (DSRC) - DSRC application layer EN 13372 Road transport and traffic telematics - Dedicated short-range communication - Profiles for RT
23、TT applications This document comprises requirements for Open Systems Interconnection (OSI) Layer 1 at 5,8 GHz for DSRC. It does not include associated measurement procedures for verification of the requirements. Test methods for conformity are provided in ETSI EN 300674-1, ETSI EN 300674-2-1, ETSI
24、EN 300674-2-2. This European Standard caters for on-board units based on transponder technologies. Furthermore, it allows for mixed time, frequency and space division multiple access approaches. This European Standard is conceived for the 10 MHz part, i.e. 5,795 GHz to 5,805 GHz, of the ISM band at
25、5,8 GHz which is recommended by ECC/DEC(01)01. An additional sub-band (5,805 GHz - 5,815 GHz) may be allocated on a national basis for RTTT. National restrictions on the usage of these frequency bands may apply according to CEPT/ERC REC 70-03. B55EB1B3E14C22109E918E8EA43EDB30F09CC9B7EF8DD9NormCD - S
26、tand 2007-03 EN 12253:2004 (E) 5 1 Scope The DSRC Standards EN 12253, EN 12795 and EN 12834, which together form a three-layered architecture for DSRC, are designed to encompass a wide range of services for different purposes in order to make the basic DSRC architecture suited for many different app
27、lications and for a wide range of possible products and systems. This document: specifies a physical layer at 5,8 GHz for DSRC as applicable in the field of Road Transport and Traffic Telematics (RTTT). provides requirements for the communication medium to be used for exchange of information between
28、 road-side units (RSU) and on-board units (OBU). caters for a communication means to be used by several applications in the RTTT sector. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited appl
29、ies. For undated references, the latest edition of the referenced document (including any amendments) applies. ETSI EN 300674-1 Electromagnetic compatibility and Radio spectrum Matters (ERM); Road Transport and Traffic Telematics (RTTT); Dedicated Short Range Communication (DSRC) transmission equipm
30、ent (500 kbit/s / 250 kbit/s) operating in the 5,8 GHz Industrial, Scientific and Medical (ISM) band; Part 1: General characteristics and test methods for Road Side Units (RSU) and On-Board Units (OBU) 3 Terms and definitions For the purposes of this document, the following terms and definitions app
31、ly. 3.1 General definitions 3.1.1 Adjacent channel refers to the use of a neighbouring DSRC channel by two or more emissions Note: It is possible that a DSRC channel has either one or two adjacent channels. 3.1.2 Antenna bore sight direction direction of maximum antenna gain 3.1.3 Bit error ratio av
32、eraged number of erroneous bits relative to the total number of transmitted bits 3.1.4 Channel for DSRC, a channel is indicated by reference to the downlink centre frequency of one of up to four frequency bands with 5 MHz width each. B55EB1B3E14C22109E918E8EA43EDB30F09CC9B7EF8DD9NormCD - Stand 2007-
33、03 EN 12253:2004 (E) 6 3.1.5 Co-channel refers to the use of the same DSRC channel by two or more emissions 3.1.6 Downlink communication Communication from the RSU to the OBU 3.1.7 On Board Unit (OBU) physical assembly that is located and operated in or on the vehicle to transmit and/or receive DSRC
34、 signals. It may be in a form that is removable from the vehicle, or mountable in or on any part of the vehicle structure, or bonded to a part of the vehicle, or an integral part of a vehicle component, such as a windscreen, bumper or licence plate. In this document, parameters that refer to an OBU
35、relate to the form that the OBU takes as it is supplied to the vehicle manufacturer or constructor. 3.1.8 Roadside Unit (RSU) DSRC equipment usually residing by the side of the road or overhead the road 3.1.9 Uplink communication communication from the OBU to the RSU 3.2 Downlink parameters Downlink
36、 parameters (prefixed D) apply to transmission of data from RSU to OBU. 3.2.1 D1 Carrier frequencies number and values of the downlink carrier frequencies, which are equal to the frequencies of the CW, transmitted by the RSU and used by transponder OBUs for uplink communication. Each carrier frequen
37、cy is the centre frequency of a downlink channel. 3.2.2 D1a Tolerance of carrier frequencies maximum deviation of the carrier frequency resulting from any cause. It is expressed in parts per million (ppm). EXAMPLE: 1 ppm of a 5,8 GHz carrier allows for the carrier frequency to be in the range of 5,8
38、 GHz 5,8 kHz. 3.2.3 D2 RSU transmitter spectrum mask maximum allowed power within a defined frequency band emitted by the RSU transmitter 3.2.4 D3 OBU minimum frequency range minimum range of frequencies that has to be received by the OBU receiver. 3.2.5 D4 Maximum E.I.R.P. See ETSI EN 300674-1 3.2.
39、6 D4a Angular E.I.R.P. mask E.I.R.P. as a function of the angle , where indicates the angle relative to a vector perpendicular to the road surface, pointing downwards B55EB1B3E14C22109E918E8EA43EDB30F09CC9B7EF8DD9NormCD - Stand 2007-03 EN 12253:2004 (E) 7 3.2.7 D5 Polarisation locus of the tip of th
40、e vector of the electrical field strength in a plane perpendicular to the transmission vector. Examples are horizontal and vertical linear polarisation and left and right hand circular polarisation. 3.2.8 D5a Cross-polarisation (ellipticity of polarisation) antenna designed to transmit left hand cir
41、cular waves may transmit some right hand circular waves in addition. Cross-Polar Discrimination (XPD) is defined as the ratio between left and right hand circular power PLHC/PRHC, when the total power transmitted is PLHC+ PRHC. 3.2.9 D6 Modulation keying of the carrier wave by coded data. Some examp
42、les are Amplitude Shift Keying (ASK), Phase Shift Keying (PSK), Frequency Shift Keying (FSK) and linear Amplitude Modulation (AM). 3.2.10 D6a Modulation index ratio of the variation of the modulation parameter (frequency, amplitude, phase) caused by the modulation signal (data signal) For amplitude
43、modulation the modulation index is minmaxminmaxVVVVm+= where V is the envelope amplitude of the modulated signal. 3.2.11 D7 Data coding base band signal presentation, i.e. a mapping of logical bits to physical signals. Examples are bi-phase schemes (Manchester, FM0, FM1, differential Manchester), NR
44、Z and NRZI. NRZI: No transition at beginning of “1“ bit, transition at beginning of “0“ bit, no transition within bit. 3.2.12 D8 Bit rate number of bits per second, independent of the data coding 3.2.13 D8a Tolerance of bit clock maximum deviation of the bit clock resulting from any cause, expressed
45、 in ppm EXAMPLE: 100 ppm of 500 kbit/s allows for the bit clock to be in the range of 500 kHz 50 Hz 3.2.14 D9 Bit error ratio for communication maximum allowed bit error ratio valid within the dynamic range of the receiver as defined by D11a and D11b 3.2.15 D10 Wake-up trigger for OBU signal which a) indicates to the OBU that it is within a communication zone, i.e. that it may now communicate with an RSU; b) switches the OBU main c
