1、 ETSI EN 300 338-6 V1.1.1 (2017-02) Technical characteristics and methods of measurement for equipment for generation, transmission and reception of Digital Selective Calling (DSC) in the maritime MF, MF/HF and/or VHF mobile service; Part 6: Class M DSC EUROPEAN STANDARD ETSI ETSI EN 300 338-6 V1.1.
2、1 (2017-02) 2 Reference DEN/ERM-TG26-087-6 Keywords DSC, GMDSS, maritime, radio, SAR ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de G
3、rasse (06) N 7803/88 Important notice The present document can be downloaded from: http:/www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified
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9、1.1 (2017-02) 3 Contents Intellectual Property Rights 4g3Foreword . 4g3Modal verbs terminology 4g31 Scope 5g32 References 5g32.1 Normative references . 5g32.2 Informative references 5g33 Definitions and abbreviations . 6g33.1 Definitions 6g33.2 Abbreviations . 6g34 General requirements . 7g34.1 Gene
10、ral . 7g34.2 Frequency of operation . 7g34.3 Class of emission 7g34.4 Controls 7g34.5 Indicators 8g34.5.0 General 8g34.5.1 Audible indicators . 8g34.5.2 Visual Indicators. 8g34.6 Labelling. 8g34.7 Instructions . 9g34.8 Self ID 9g34.9 Own vessel MMSI 9g34.10 Battery requirement 9g35 DSC Operation . 9
11、g35.1 Listen Before Talk (LBT) Protocol 9g35.1.0 General 9g35.1.1 Active Mode Wait Period Calculation 10g35.1.2 Test Mode Wait Period Calculation 10g35.2 DSC messages 10g35.2.1 Active mode 10g35.2.1.0 General 10g35.2.1.1 Closed loop operation . 10g35.2.1.2 Open loop operation 11g35.2.1.3 Distress se
12、lf cancel 11g35.2.2 Test mode 11g35.3 Action on receipt of acknowledgment messages to alerts 12g36 Internal electronic position fixing device . 12g3History 13g3ETSI ETSI EN 300 338-6 V1.1.1 (2017-02) 4 Intellectual Property Rights IPRs essential or potentially essential to the present document may h
13、ave been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI stan
14、dards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (https:/ipr.etsi.org/). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not r
15、eferenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic compatibility and Radio spectrum Matters (ERM). The present
16、document is part 6 of a multi-part deliverable. Full details of the entire series can be found in part 1 i.1. National transposition dates Date of adoption of this EN: 8 February 2017 Date of latest announcement of this EN (doa): 31 May 2017 Date of latest publication of new National Standard or end
17、orsement of this EN (dop/e): 30 November 2017 Date of withdrawal of any conflicting National Standard (dow): 30 November 2018 Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted
18、as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI EN 300 338-6 V1.1.1 (2017-02) 5 1 Scope The present document states the minimum requirement
19、s for devices using Digital Selective Calling (DSC) Class M, for Man Overboard (MOB). The present document defines the requirements for equipment that uses DSC alerting and signalling in the maritime mobile bands and particularly the GMDSS distress and safety channels. Such equipment is not intended
20、 to provide any subsequent communications or telephony facilities. The present document is part 6 of a multi-part deliverable that covers the channel access rules and technical requirements applicable to these devices. 2 References 2.1 Normative references References are either specific (identified
21、by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. Referenced documents which are not found to be publ
22、icly available in the expected location might be found at http:/docbox.etsi.org/Reference. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The following referenced documents are necessary for the application of
23、 the present document. 1 Recommendation ITU-R M.493-14: “Digital selective-calling system for use in the maritime mobile service“. 2 ETSI EN 303 098: “Maritime low power personal locating devices employing AIS; Harmonised Standard covering the essential requirements of article 3.2 of the Directive 2
24、014/53/EU“. 3 Recommendation ITU-R M.585-7: “Assignment and use of identities in the maritime mobile service“. 4 Recommendation ITU-R M.821-1: “Optional expansion of the digital selective-calling system for use in the maritime mobile service“. 5 CENELEC EN 61108-1: “Maritime navigation and radiocomm
25、unication equipment and systems - Global navigation satellite systems (GNSS) - Part 1: Global positioning system (GPS) - Receiver equipment - Performance standards, methods of testing and required test results“. 6 CENELEC EN 61108-2: “Maritime navigation and radiocommunication equipment and systems
26、- Global navigation satellite systems (GNSS) - Part 2: Global navigation satellite system (GLONASS) - Receiver equipment - Performance standards, methods of testing and required test results“. 7 CENELEC EN 61108-3: “Maritime navigation and radiocommunication equipment and systems - Global navigation
27、 satellite systems (GNSS) - Part 3: Galileo receiver equipment - Performance requirements, methods of testing and required test results“. 2.2 Informative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specifi
28、c references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. ETSI
29、ETSI EN 300 338-6 V1.1.1 (2017-02) 6 The following referenced documents are not necessary for the application of the present document but they assist the user with regard to a particular subject area. i.1 ETSI EN 300 338-1: “Technical characteristics and methods of measurement for equipment for gene
30、ration, transmission and reception of Digital Selective Calling (DSC) in the maritime MF, MF/HF and/or VHF mobile service; Part 1: Common requirements“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in ETSI EN 300 338-1 i.1
31、and the following apply: acknowledged: automated procedure it indicates that the objective of the initial DSC message has been achieved activation: initial triggering of the MoB device i.e. both parts of the two step procedure are performed active mode: activated mode, transmitting in an emergency s
32、ituation class M: specific class of DSC functionality for use by man overboard devices closed loop: individual transmission to own vessel default: value selected or an action taken by the equipment software in the absence of any operator input distress alert: name given to the single distress DSC me
33、ssage with the format symbol 112 distress DSC message: DSC message or acknowledgement containing the distress information distress information: symbols within a DSC message describing a distress situation consisting of the MMSI of the vessel in distress, the nature of distress, the position of the v
34、essel in distress, the UTC time of that position and the mode of subsequent communication factory default: default value that is set by the manufacturer such that the field or behaviour is defined prior to any operator intervention information characters: set of symbols in a DSC message that contain
35、s the items of interest for the recipient and is used to compute the ECC symbol that terminates the message non distress DSC message: DSC messages or acknowledgements that do not have the format specifier or category of “distress“ open loop: transmitting to all ships (broadcast) using All ships call
36、 types symbol (as part of the DSC sentence): 7 binary bits of a 10 bit DSC word that have the information content test mode: self testing mode using an individual test call to own vessel word (as part of the DSC sentence): 10 binary bits that make up the coded entities of a transmitted DSC message N
37、OTE: The 10 bits consist of a 7 bit “symbol“ that gives the information content and 3 bit error check that gives the number of 0 binary bits in the 7 bit symbol. 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: AIS Automatic Identification System CIRM Co
38、mite International Radio-Maritime DSC Digital Selective Calling ECC Error Check Character ETSI ETSI EN 300 338-6 V1.1.1 (2017-02) 7 GMDSS Global Maritime Distress and Safety System GMSK Gaussian Minimum Shift Keying GNSS Global Navigation Satellite System GPS Global Positioning System HF High Freque
39、ncy ID IDentityITU International Telecommunications Union ITU-R ITU - Radiocommunications Sector LBT Listen Before Talk MF Medium Frequency MMSI Maritime Mobile Service Identity MOB Man Overboard PM Phase Modulation UTC Universal Time Co-ordinated VHF Very High Frequency WGS World Geodetic System 4
40、General requirements 4.1 General Class M MOB devices are employed in situations of grave and imminent danger to persons that require immediate assistance from other vessels. MOB devices shall be: Fitted with an internal electronic GNSS position fixing device Fitted with a transceiver operating on VH
41、F DSC channel 70 Fitted with an Automatic Identification System (AIS) transmitter operating in accordance with ETSI EN 303 098 2 to provide radio location Fitted with audio and visual indicators to designate operation of the MOB device, intrinsically safe MOB devices shall be fitted with a minimum o
42、f visual indicators Capable of manual and automatic activation and manual deactivation 4.2 Frequency of operation The MOB device shall operate on 156,650 MHz (Channel 70), 160,975 MHz (AIS 1) yyyy = the sequence number 0000 to 9999 allocated by the manufacturer. Manufacturers IDs are issued by CIRM.
43、 Manufacturers shall only use manufacturer IDs that have been issued to them by CIRM, except for training trials and conformance testing purposes where the ID xx=00 can be used. After being programmed by the manufacturer, it shall not be possible for the user to change the self ID of the MOB device.
44、 The self ID shall be held in non-volatile memory. 4.9 Own vessel MMSI The MOB device shall be capable of being programmed with the MMSI of its own vessel or group. It shall be possible for a MOB devices own vessel MMSI to be re-programmed in the field, for example when MOB devices are moved from on
45、e vessel to be stowed on another vessel. It shall be possible for users to re-programme the own vessel MMSI without locating devices having to be returned to the manufacturer. The own vessel MMSI shall be held in non-volatile memory. If the own vessel MMSI is not entered or not valid the locating de
46、vice shall indicate this during test. 4.10 Battery requirement The battery provided as a power source shall be a primary battery and have sufficient capacity to operate the MOB device within the requirements of the present document for an uninterrupted period of at least 12 hours, at a temperature o
47、f -20 degrees Centigrade ( 3 degrees Centigrade). 5 DSC Operation 5.1 Listen Before Talk (LBT) Protocol 5.1.0 General For closed loop transmission LBT is not applied. Transmission commences immediately and there is no prioritized wait applied. For all subsequent open loop transmissions the MOB devic
48、e shall apply the prioritized wait scheme described in clause 3.1.8 of annex 4 of Recommendation ITU-R M.493-14 1 except that it shall not transmit after 1 second if channel 70 remains busy. MOB devices transmit at significantly lower power than do ships and shore stations, therefore to increase the
49、 probability of their messages being received as well as to reduce unwanted interference on channel 70, a locating device shall never transmit whilst channel 70 is busy. ETSI ETSI EN 300 338-6 V1.1.1 (2017-02) 10 To determine if channel 70 is busy the MOB device shall listen for and decode DSC symbols as defined in table 1 of Recommendation ITU-R M.493-14 1; it is not sufficient to use squelch alone. Channel 70 is determined busy when carrier is detected and a stream of valid symbols is decoded. Whilst a stream of valid symbols is de
