1、 ETSI TS 102 576 V2.2.1 (2017-10) Radio access network equipment specification; Mobile Communication On Board Aircraft (MCOBA) systems; Operational requirements and methodology for showing conformance TECHNICAL SPECIFICATION ETSI ETSI TS 102 576 V2.2.1 (2017-10)2 Reference RTS/MSG-TFES-1127 Keywords
2、 GSM, LTE, MCOBA, radio, UMTS 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 Grasse (06) N 7803/88 Important notice The present docum
3、ent 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 without the prior written authorization of ETSI. In cas
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6、tal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modif
7、ied without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. ETSI 2017. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are trademarks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are trademarks
8、 of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. oneM2M logo is protected for the benefit of its Members. GSM and the GSM logo are trademarks registered and owned by the GSM Association. ETSI ETSI TS 102 576 V2.2.1 (2017-10)3 Contents Intellectual Property
9、Rights 4g3Foreword . 4g3Modal verbs terminology 4g3Introduction 4g31 Scope 5g32 References 5g32.1 Normative references . 5g32.2 Informative references 5g33 Definitions, symbols and abbreviations . 6g33.1 Definitions 6g33.2 Symbols 6g33.3 Abbreviations . 6g34 Operational requirements . 7g34.1 Conside
10、rations for installation of Mobile Communication On Board Aircraft systems . 7g34.2 Maximum E.I.R.P. of the aircraft due to the Mobile Communication On Board Aircraft system . 8g34.3 Derivation of the minimum power level of the NCU at the antenna input (Criterion A) . 8g34.4 Derivation of the permit
11、ted maximum power level of the MCOBA system at the antenna input (Criterion B) . 10g34.5 Derivation of the effective power level due to the UE onboard aircraft (Criterion C) . 10g35 Description of test methodology to derive key parameters 10g35.1 Cabin coupling loss 10g35.1.1 General description of
12、test set up 10g35.1.2 Definition 11g35.1.3 Test purpose 11g35.1.4 Test procedure 11g35.2 Consideration for RF attenuation measurement on aircraft 13g35.3 Aircraft attenuation in combination with the aircraft antenna system 14g35.3.1 Test purpose 14g35.3.2 Methods of measurement 14g35.3.3 Calculation
13、 of combined effective aircraft attenuation and antenna system . 15g35.4 Attenuation of aircraft at window . 16g35.4.1 Test purpose 16g35.4.2 Methods of measurement 16g35.4.3 Calculation of aircraft attenuation at the window . 18g3Annex A (informative): System Description 20g3A.1 High level System D
14、escription . 20g3A.2 OBTS 21g3A.3 RF Screening 21g3A.4 Antenna system 21g3A.5 Antenna system installation 21g3Annex B (informative): Bibliography . 22g3History 23g3ETSI ETSI TS 102 576 V2.2.1 (2017-10)4 Intellectual Property Rights Essential patents IPRs essential or potentially essential to the pre
15、sent document may have 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 r
16、espect of ETSI standards“, 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
17、of other IPRs not referenced 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. Trademarks The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners. ETSI claims n
18、o ownership of these except for any which are indicated as being the property of ETSI, and conveys no right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does not constitute an endorsement by ETSI of products, services or organizations associ
19、ated with those trademarks. Foreword This Technical Specification (TS) has been produced by ETSI Technical Committee Mobile Standards Group (MSG). Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ a
20、re to be interpreted 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. Introduction The present document defines operational requirements and the metho
21、dology for showing conformance to the operational requirements for a Mobile Communication Onboard Aircraft system (MCOBA) whose essential requirements are defined in the ETSI EN 302 480 i.4 to demonstrate conformity to Article 3.2 of the Radio Equipment Directive i.1. The present document provides a
22、 methodology in order to derive power values at the antenna output port of the system which can be used to demonstrate conformance to any E.I.R.P. limits defined outside the aircraft. Given the dependence of the E.I.R.P. levels outside the aircraft on the specific system implementation, the present
23、document also identifies testing procedures to determine the value of the key relevant RF parameters of the aircraft. ETSI ETSI TS 102 576 V2.2.1 (2017-10)5 1 Scope The present document specifies operational requirements and the methodology for showing conformance to the operational requirements for
24、 a Mobile Communication Onboard Aircraft system, which allows communication in the GSM and LTE (FDD) 1 800 MHz frequency band and the UMTS 2 100 MHz frequency band to ensure, that mobile terminals will not connect to ground based mobile networks. The present document further specifies measurement me
25、thodologies allowing the definition of the key RF parameters of the aircraft, which are: the aircraft attenuation as observed at the windows; the aircraft attenuation in combination of the antenna system as observed at the antenna system feeding point; the effective cabin coupling loss within the ai
26、rcraft cabin. The present document also provides a way to translate the power level generated by the Mobile Communication Onboard Aircraft system at the antenna system output port to an E.I.R.P. defined outside the aircraft. 2 References 2.1 Normative references References are either specific (ident
27、ified 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 b
28、e publicly available in the expected location might be found at https:/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 applica
29、tion of the present document. Not applicable. 2.2 Informative references References are either specific (identified 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 versio
30、n 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. The following referenced documents are not necessary for the application of the present document
31、but they assist the user with regard to a particular subject area. i.1 Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment and repealing Directive 1
32、999/5/EC(Radio Equipment Directive). i.2 Commission Implementing Decision 2016/2317/EU of 12 November 2013 amending Decision 2008/294/EC and Implementing Decision 2013/654/EU, in order to simplify the operation of mobile communications on board aircraft (MCA services) in the Union. i.3 ECC Report 93
33、: “Compatibility between GSM equipment on board aircraft and terrestrial networks“. ETSI ETSI TS 102 576 V2.2.1 (2017-10)6 i.4 ETSI EN 302 480 (V2.2.0): “Mobile Communication On Board Aircraft (MCOBA) systems; Harmonised Standard for access to radio spectrum“. i.5 CEPT Report 63: “Report from CEPT t
34、o the European Commission in response to the Mandate “To undertake technical studies regarding the possibility of making the usage of the network control unit (NCU) optional onboard MCA enabled aircraft“. 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present docume
35、nt, the following terms and definitions apply: aircraft type: common platform of aircraft which possess the same RF characteristics antenna system type: specific antenna characteristics which are uniquely defined by a set of RF parameters installation type: precise manner of installation of the dedi
36、cated antenna system Mobile Communication On Board Aircraft system (MCOBA): system comprising the functions provided by the NCU and the OBTS Network Control Unit (NCU): component of the Mobile Communication On Board Aircraft system preventing direct connection of the onboard mobile terminals with mo
37、bile networks on the ground by raising the noise floor in the cabin Onboard Base Transceiver Station (OBTS): component of the Mobile Communication On Board Aircraft system responsible for radio transmission and reception to or from the onboard mobile terminals 3.2 Symbols For the purposes of the pre
38、sent document, the following symbols apply: wavelength dB decibeldBm power in decibel relative to 1 mW 3.3 Abbreviations For the purposes of the present document, the following abbreviations apply: ACU Antenna Coupling Units BTS Base Transceiver station CCL Cabin Coupling Loss CDF Cumulative Distrib
39、ution Function CDMA Code Division Multiple Access CW Continuous Wave E.I.R.P. Effective Isotropic Radiated Power ECC Electronic Communications Committee FDD Frequency Division Duplexing FSL Free Space Loss GSM Global System for Mobile communications LTE Long Term Evolution MCOBA Mobile Communication
40、 On Board Aircraft NCU Network Control Unit OBTS On board aircraft Base Transceiver System PG Processing Gain RF Radio Frequency RMS Root Mean Square UE User EquipmentETSI ETSI TS 102 576 V2.2.1 (2017-10)7 UMTS Universal Mobile Telecommunications System WCDMA Wide Code Division Multiple Access 4 Ope
41、rational requirements 4.1 Considerations for installation of Mobile Communication On Board Aircraft systems The requirements for operation of a MCOBA system in order to comply with defined limits, are highly dependent on many factors, including the aircraft size and type, its RF isolation characteri
42、stics, propagation characteristics within the cabin and the installation of the MCOBA system. Considerations to show compliancy will depend on different elements of technical system design and choice of installation for achieving compliance with the limits, such as: Variation of the output power of
43、NCU/ OBTS outside the aircraft depending on the fuselage attenuation. Choosing for the NCU/OBTS an appropriate antenna type, number and their placement so as to achieve the most efficient coverage along the cabin while limiting radiation outside the aircraft. Valuating the propagation characteristic
44、s inside the cabin, e.g. variation of signal strength due to the layout of the cabin, and factoring this into the evaluation of emissions radiated outside the aircraft. Results of measurement campaigns have indicated that the effective attenuation of signals by an aircraft is dependent on the aircra
45、ft type. Furthermore the signal leakage of the OBTS will be subject to the RF variations of different antenna systems and their various installations. Hence system compliancy tests carried out on aircraft can only be used as validation for the same combination of the system type and the aircraft typ
46、e, i.e. validation of antenna system “A“ with aircraft type “X“ cannot be used on an aircraft type “Z“ or using antenna system “B“. To show conformance with the requirements the methodology described in the following clauses is defined. Conformance shall be shown with respect to the following three
47、criteria: a) Minimum power at NCU antenna connector shall be sufficient to inhibit connection to all relevant terrestrial networks at the height above ground the system is to be operated. The methodology is described in clause 4.3. b) The far field E.I.R.P. outside the aircraft from the OBTS/NCU sha
48、ll be low enough to ensure non-interference with terrestrial UEs. The methodology is described in clause 4.4. c) The E.I.R.P. outside the aircraft from the UEs shall be low enough to ensure non-interference with terrestrial base stations. The methodology is described in clause 4.5. The criteria will
49、 be referred to as A, B and C in the remainder of the present document. The system can only be operated at height above ground for which compliance with all the criteria A, B and C can be shown. The calculations shown in clauses 4.3, 4.4 and 4.5 contain a number of input parameters which shall be measured or estimated. The test methodologies to derive these parameters are described in clause 5. Table 4.1-1: Operational requirements and methodology for showing conformance Operational requirements Maximum permitted E.I.R.P. from NCU/OBTS Maximum perm
