1、 ETSI EN 301 842-2 V1.7.1 (2015-04) VHF air-ground Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for ground-based equipment; Part 2: General description and data link layer EUROPEAN STANDARD ETSI ETSI EN 301 842-2 V1.7.1 (2015-04)2Reference REN/AERO-
2、00020-2 Keywords aeronautical, digital, radio, testing, VHF 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 Impo
3、rtant 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 without the prior written
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6、services: https:/portal.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 versio
7、n shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2015. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI register
8、ed for the benefit of its Members. 3GPPTM and LTE are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI EN 301 842-2 V1.7.1 (2015-04)3Contents Intellectual
9、 Property Rights 8g3Foreword . 8g3Modal verbs terminology 8g3Introduction 9g31 Scope 10g32 References 12g32.1 Normative references . 12g32.2 Informative references 12g33 Definitions and abbreviations . 13g33.1 General definitions . 13g33.2 Definition of bit order . 16g33.3 Abbreviations . 16g34 Gene
10、ral description of VDL Mode 4 ground station link layer 18g34.1 General . 18g34.1.1 Overview of VDL Mode 4 18g34.1.2 Relationship to OSI reference model 19g34.1.3 VDL Mode 4 services . 20g34.1.4 ADS-B Function . 20g34.1.5 Operational scenarios 21g34.1.6 VDL Mode 4 fundamentals 21g34.1.7 Possible con
11、figuration of ground equipment 22g34.1.8 Overall structure of specifications for VDL Mode 4 23g34.1.9 Equipment performance verification 24g34.2 Ground quarantine 25g34.3 System timing . 25g34.4 Net entry . 25g34.5 Autotune capability 25g34.6 Autonomous and fixed access 26g35 Minimum performance spe
12、cification under standard test conditions . 26g35.1 MAC sublayer 26g35.1.1 Services. 26g35.1.2 MAC sublayer services . 26g35.1.3 MAC sublayer parameters 26g35.1.3.1 General 26g35.1.3.2 Parameter M1 (number of slots per superframe) . 27g35.1.4 Time synchronization . 27g35.1.4.1 Primary 27g35.1.4.2 Se
13、condary 27g35.1.4.3 Alignment to UTC second 27g35.1.4.4 Data quality level 27g35.1.5 Slot idle/busy notification . 28g35.1.5.1 Slot idle detection 28g35.1.5.2 Slot busy detection 28g35.1.5.3 Slot occupied detection . 28g35.1.5.4 Signal level indication . 28g35.1.6 Transmission processing . 28g35.1.7
14、 Received transmission processing 28g35.2 VSS sublayer 29g35.2.1 Services . 29g35.2.1.1 Error detection . 29g35.2.1.2 Channel congestion . 29g35.2.2 Burst format 29g3ETSI ETSI EN 301 842-2 V1.7.1 (2015-04)45.2.2.1 VSS burst structure . 29g35.2.2.2 Version number . 30g35.2.2.3 Source address . 30g35.
15、2.2.4 Message ID . 30g35.2.2.5 Information field . 31g35.2.2.6 Reservation fields 31g35.2.2.7 Autonomous/directed flag . 32g35.2.3 VSS sublayer parameters 32g35.2.3.1 General 32g35.2.3.2 Parameter VS1 (number of ground quarantined slots) 33g35.2.3.3 Parameter VS2 (minimum CCI performance) . 33g35.2.
16、3.4 Parameter VS4 (quarantine slot re-use range) . 33g35.2.3.5 Parameter VS5 (maximum burst length) . 34g35.2.4 VSS quality of service parameters 34g35.2.4.1 General 34g35.2.4.2 Parameter Q1 (priority) . 34g35.2.4.3 Parameters Q2a to Q2d (slot selection range constraint for level n) . 35g35.2.4.4 Pa
17、rameter Q3 (replace queued data) . 36g35.2.4.5 Parameter Q4 (number of available slots) . 36g35.2.5 Received transmission processing 37g35.2.6 Reserved access protocol specification . 37g35.2.6.1 Reservation table . 37g35.2.6.2 Selecting slots for transmission or reservation 38g35.2.6.3 Reserved tra
18、nsmissions . 39g35.2.6.4 Reservation conflicts. 40g35.2.7 Random access protocol specification 41g35.2.7.1 General 41g35.2.7.2 Random access parameters 41g35.2.7.3 Random access procedures 42g35.2.8 Fixed access protocol specification 42g35.2.8.1 General 42g35.2.8.2 Recommendation 43g35.2.9 Null res
19、ervation protocol specification . 43g35.2.9.1 Null reservation burst format 43g35.2.10 Periodic broadcast protocol specification . 43g35.2.10.1 Periodic broadcast reservation burst format 43g35.2.10.2 Periodic broadcast timers 44g35.2.10.3 Periodic broadcast parameters . 44g35.2.10.4 Periodic broadc
20、ast reception procedures . 45g35.2.10.5 Periodic broadcast transmission procedures 46g35.2.11 Incremental broadcast protocol specification . 48g35.2.11.1 Incremental broadcast reservation burst format 48g35.2.11.2 Incremental broadcast parameters . 49g35.2.11.3 Incremental broadcast reception proced
21、ures . 50g35.2.11.4 Incremental broadcast transmission procedures 50g35.2.12 Combined periodic broadcast and incremental broadcast protocol specification . 50g35.2.12.1 Combined periodic broadcast and incremental broadcast reservation burst 50g35.2.13 Big Negative Dither (BND) broadcast protocol spe
22、cifications . 51g35.2.13.1 BND reservation burst format . 51g35.2.13.2 BND broadcast parameters 51g35.2.13.3 BND broadcast reception procedures 51g35.2.14 Unicast request protocol specification 52g35.2.14.1 Unicast request reservation burst format . 52g35.2.14.1a Unicast request parameters 53g35.2.1
23、4.2 Unicast request reception procedures 53g35.2.14.3 Unicast request transmission procedures 54g35.2.15 Information transfer request protocol specification 54g35.2.15.1 Information transfer request reservation burst format . 54g35.2.15.2 Information transfer request reception procedures 55g35.2.16
24、Directed request protocol specification. 56g35.2.16.1 Directed request reservation burst format . 56g35.2.16.2 Directed request parameters 59g3ETSI ETSI EN 301 842-2 V1.7.1 (2015-04)55.2.16.3 Directed request reception procedures 60g35.2.16.4 Directed request transmission procedures . 61g35.2.17 Blo
25、ck reservation protocols specification . 62g35.2.17.1 Superframe block reservation burst format . 62g35.2.17.2 Second frame block reservation burst format 63g35.2.17.3 Superframe block reservation parameters . 64g35.2.17.4 Superframe block reservation reception procedures . 64g35.2.17.5 Second frame
26、 block reservation parameters 65g35.2.17.6 Second frame block reservation reception procedures 65g35.2.17.7 Superframe block reservation transmission procedures 66g35.2.17.8 Second frame block reservation transmission procedures . 66g35.2.18 Response protocol specification . 67g35.2.18.1 Response bu
27、rst format . 67g35.2.19 General request protocol specification 67g35.2.19.1 General request burst format . 67g35.2.19.2 General request procedures . 68g35.2.20 General response protocol specification . 68g35.2.20.1 General response burst format. 68g35.2.20.2 General response procedures . 70g35.2.21
28、Retransmission procedures . 70g35.3 DLS sublayer 71g35.3.1 Services. 71g35.3.1.1 General 71g35.3.1.2 Data transfer 71g35.3.1.3 Station address encoding . 71g35.3.1.4 DLS burst formats . 72g35.3.2 DLS system parameters 73g35.3.2.1 Parameter ND4 (maximum length of a UDATA burst) 74g35.3.3 DLS procedur
29、es 74g35.3.3.1 Broadcast. 74g35.3.3.2 DLS not supported 74g35.3.3.3 User data packet reception 74g35.4 Link Management Entity sublayer . 74g35.4.1 Services . 74g35.4.2 Synchronization burst format 75g35.4.2.1 General 75g35.4.2.2 Fixed and variable data fields 75g35.4.2.3 Fixed data field format 75g3
30、5.4.2.4 Variable data field format . 79g35.4.2.5 Synchronization burst request . 79g35.4.2.6 Link management burst . 79g35.4.3 Control (CTRL) parameter formats 80g35.4.3.1 Encoding . 80g35.4.3.2 VDL Mode 4 parameter identification 80g35.4.3.3 Ground-initiated modification parameters 80g35.4.3.4 Grou
31、nd-initiated information parameters 83g35.4.3a LME timers and parameters 86g35.4.3a.1 General 86g35.4.3a.2 Counter L1 (maximum number of missed reservations) and Timer TL3 (inter miss timer) . 87g35.4.4 LME procedures . 87g35.4.4.1 Synchronization burst procedures . 87g35.4.4.2 Peer Entity Contact T
32、able (PECT) 89g35.4.4.3 Network entry protocol specifications 89g35.4.5 Additional material for ADS-B applications 90g35.4.5.1 Information field formats 90g35.4.5.2 ADS-B request format. 90g35.5 Additional requirements for ground stations 91g35.5.1 System timing requirements . 91g35.5.1.1 Maintenanc
33、e of Primary time 91g35.5.2 Ground station interface requirements 91g35.5.2.1 Ground station coordination 91g35.5.2.2 Network timing requirements 91g3ETSI ETSI EN 301 842-2 V1.7.1 (2015-04)65.5.2.3 Application interface requirements . 92g35.5.2.4 Transmission control requirements . 92g35.5.2.5 Super
34、frame block reservation rebroadcast procedures 92g35.5.2.6 Fixed transmission parameters 92g35.5.2.7 Protection of fixed access protocol transmissions by ground quarantine 93g35.5.2.8 Protection of fixed access protocol transmissions by use of appropriate reservation protocols 93g35.5.2.9 Restrictio
35、n of autotune reservations 93g35.5.2.10 Transmission time for autotune reservations . 93g35.5.2.11 Reporting of channel usage . 94g35.6 Definitions for compact position reporting 94g35.6.1 Introduction. 94g35.6.2 Parameter symbols, data types, constants and variables . 94g35.6.2.1 Parameter symbols
36、94g35.6.2.2 Data types 94g35.6.2.3 Constants. 94g35.6.2.4 Variables . 94g35.6.2.5 Functions. 95g35.6.2.6 Patch constants 95g35.6.3 Fixed data field position encoding 95g35.6.4 Fixed data field position local decoding . 95g35.6.5 Fixed data field position global decoding . 95g35.6.6 Position report p
37、rocessing . 95g36 General design requirements 95g36.1 Controls and indicators . 95g36.2 Operation of controls 95g36.3 Warm up . 95g36.4 Effects of tests 95g36.5 Software management 96g36.6 Recovery from failure 96g36.6.1 Failure of the VDL equipment 96g36.7 Monitoring of proper operation 96g37 Proto
38、col test procedures . 96g37.1 General . 96g37.1.1 Input voltage . 96g37.1.2 Power input frequency 96g37.1.3 Adjustment of equipment 97g37.1.4 Equipment configuration 97g37.1.5 Test equipment 97g37.1.6 Test equipment precautions 97g37.1.7 Ambient conditions . 97g37.1.8 Connected loads 97g37.1.9 Warm-
39、up period 97g37.2 Required test rig . 98g37.3 Protocol test-suite description methodology 100g37.4 Detailed protocol test procedures . 100g37.4.1 Test-suite overview . 100g37.4.2 Declarations 105g37.4.3 Constraints 105g37.4.3.1 Abbreviations 105g37.4.3.1.1 Subfield mnemonics 105g37.4.3.1.2 Special c
40、haracters used in the subfield definitions 106g37.4.3.1.3 Station addresses and positions . 106g37.4.3.1.4 Tables of values for use in CPR test cases 108g37.4.3.1.5 Tables of values for use in content checking test cases . 118g37.4.3.1.6 VDL4 burst formats. 121g37.4.3.2 Test cases 139g37.4.3.2.1 Tes
41、t case macros 139g37.4.3.2.2 Test case descriptions 141g3Annex A (informative): Cross reference matrix 300g3ETSI ETSI EN 301 842-2 V1.7.1 (2015-04)7Annex B (informative): Description of ISO/IEC 9646 Test Methodology . 316g3B.1 Overview of the structure of the ISO/IEC 9646 Test Suites 316g3B.2 Test c
42、ase description 316g3B.3 Queue action . 318g3B.4 Repeat construct . 318g3B.5 Macro definitions . 319g3B.6 Test case naming 319g3Annex C (informative): Bibliography . 320g3History 325g3ETSI ETSI EN 301 842-2 V1.7.1 (2015-04)8Intellectual Property Rights IPRs essential or potentially essential to the
43、present 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 i
44、n respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/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
45、 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. Foreword This European Standard (EN) has been produced by ETSI Technical Committee Aeronautics (AERO). The present document is part 2 of a
46、multi-part deliverable covering the VHF air-ground Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for ground-based equipment, as identified below: Part 1: “EN for ground equipment“; Part 2: “General description and data link layer“; Part 3: “Additiona
47、l broadcast aspects“; Part 4: “Point-to-point functions“; Part 5: “Harmonized EN covering the essential requirements of article 3.2 of the R Technical characteristics and methods of measurement for airborne equipment. National transposition dates Date of adoption of this EN: 6 April 2015 Date of lat
48、est announcement of this EN (doa): 31 July 2015 Date of latest publication of new National Standard or endorsement of this EN (dop/e): 31 January 2016 Date of withdrawal of any conflicting National Standard (dow): 31 January 2017 Modal verbs terminology In the present document “shall“, “shall not“,
49、“should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are 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. ETSI ETSI EN 301 842-2 V1.7.1 (2015-04)9Introduction The present document states the technical specifications for Very High Frequency (VHF) Digital Link (VDL) Mode 4 ground-based radio transmitters, transceivers and receivers for air-ground communications operating in the VHF ban
