Implementation of ATN/AMHS in Asia-Pacific Region: Strategies and Progress
Explore the progressive initiatives in implementing ATN/AMHS in the Asia-Pacific region as outlined by the International Civil Aviation Organization. The strategic adoption, communication ground-to-ground strategies, ATN over OSI and ATN over IPS conclusions, dual-stack protocols integration, and the Asia/Pacific regional router plan are discussed. The focus is on achieving global harmonization and enhancing air-ground communication infrastructure for efficient aviation operations.
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SP/1 International Civil Aviation Organization ATN/AMHS IMPLEMENTATION IN ASIA/PACIFIC REGION Sujan Kumar Saraswati ICAO Asia Pacific Office, Bangkok
STRUCTURE Strategy Structure Status Technical Specifications Address Management Handling OPMET & AIS/AIM messages Directory Service Voice over Internet Protocol (VoIP) Conclusion AMHS/SWIM SEMINAR 2
COMMUNICATION GROUND-TO-GROUND Strategy adopted by APANPIRG/17 August 2006 ATN to be implemented in compliance with ICAO requirements Initially support ATS Message Handling System (AMHS) to replace AFTN Deploy Backbone ATN routers to provide reliable infrastructure to eventually support air-ground applications Reasonable timeframe be established to replace AFTN with AMHS Message Transfer Agent sites to provide AFTN/AMHS gateways States to cooperate with each other in the implementation States to organize training After successful deployment of ground-to-ground ATN, should introduce air-to-ground Deploy dual stack protocols (OSI/IPS)
ATN OVER OSI AND ATN OVER IPS Conclusion 19/20 Adoption of ATN over IPS in addition to ATN over OSI That, considering the inclusion of ATN over IPS SARPs in ICAO Annex 10, Volume 3 and to support global harmonization of ATN implementation, States hosting BBIS be urged to implement ATN over IPS in addition to ATN over OSI and complete this implementation of Dual Stack ATN (ATN/OSI and ATN/IPS) by 2011.
DUAL STACK MTA MTA AMHS MTA ATN Router IP RFC 1006 TCP TP4 Router IP ATN Router ATN Router CLNP IP MTA Router IP Based AMHS Message ISO/OSI AMHS Message Dual Stack at the MTA level Dual Stack at the sub-net level Dual stack at IP level: - Address allocation - IPv4 vs. IPv6
ASIA/PAC REGIONAL ROUTER PLAN United State of America Japan China Russian Federation Mongolia Palau Hong Kong, China Micronesia, Federal State of Macau China DPR Korea Myanmar Lao Marshall Island Vietnam Pakistan Philippines Taiwan Nepal Thailand Malaysia Brunei Darussalam Cambodia American Samoa Indonesia Bangladesh Bhutan India Singapore Australia Fiji Sri Lanka New Zealand Maldives Island Vanuatu Papua New Guinea Timor Leste Solomon Islands Nauru Kiribati New Tuvalu Wallis and Futuna Islands Caledonia ATN Backbone Site ATN Site Plan ATN Backbone Operational ATN Backbone Cook Islands Samoa Tonga French Polynesia Niue Operational ATN Link Plan ATN Link
INTER-REGIONAL CONNECTIVITY China Europe Japan JP CN EUR Region Hong Kong, China HK NorthAmerica TH Thailand MiddleEast Fiji NAM Region FJ MID Region SG Singapore Africa IN AU India AFI Region Australia APACRegion US is North America Backbone Inter-Regional Trunk Connection New Inter-Regional Trunk Connection Intra-Regional Trunk Connection New Intra-Regional Trunk Connection
AMHS IMPLEMENTATION STATUS ADMINISTRATION LOCATION TARGET DATE REMARKS Australia Brisbane 2006 Implemented China Beijing 2010 Implemented Hong Kong China Hong Kong 2009 Implemented Fiji Nadi 2010 Implemented India Mumbai 2010 Implemented Japan Fukuoka 2006 ISO/OSI Singapore Singapore 2010 Implemented Thailand Bangkok 2012 USA Salt Lake City 2006 Implemented AMHS/SWIM SEMINAR 8
TECHNICAL SPECFICATIONS ATNICG/6 recognized that Asia/Pacific requirements for ATN/AMHS developed at different times in several manuals based on different versions of Doc 9705 and EUROCONTROL AMHS Manual. Creates an Ad-hoc group to develop a baseline document. APANPIRG adopts AMHS Technical Specifications Draft Conclusion 22/18 Asia/Pacific AMHS Technical Specifications That, the Asia/Pacific AMHS Technical Specifications provided in the Appendix E to the Report on Agenda Item 3.4 be adopted. AMHS/SWIM SEMINAR 9
AMHS REGISTER ICAO established AMHS Management Domains and Addressing Information Register available on web link http://legacy.icao.int/anb/panels/acp/amhs/A MHSRegisterList.cfm States urged to review information provided in respect of their administrations and get it corrected in case it is not correct. Project title (Insert, Header & Footer) 10
EUROCONTROL AMC ICAO in cooperation with EUROCONTROL establishes procedures for coordination and synchronization of AMHS addresses on short/medium term States invited to designate representatives to register as AMC users using procedures described For long term, true global method of AMHS address management required. States shall support CAAS addressing scheme and BBIS States shall support both CAAS and XF addressing scheme (Strategy) Project title (Insert, Header & Footer) 11
HANDLING OPMET MESSAGES ICAO supports XML for OPMET messages Milestones reported to CNS/MET SG/14 AFTN limitations to handle XML messages Some States not implemented full IA-5 character set Limitation line length 69 characters Limitations message length 1800 characters. AFTN and AMHS expected to co-exist for considerable period of time. Regional OPMET Data Banks RODB to accept either AFTN or AMHS, so AFTN/AMHS Gateway required to be implemented. Project title (Insert, Header & Footer) 12
AMHS GATEWAY OPMET MESSAGES Convert non-Annex 10 ITA2 characters to ? before passing to AFTN Part messages of more than 1800 characters Convert IA5 IRV characters, if in lower case, into equivalent upper case characters Wrap lines if longer than 69 characters AMHS/SWIM SEMINAR 13
XML FOR AIM Elements of specifications for Digital NOTAM to be included in Amendment 38, Annex 15 Amendment 38, Annex 15 Substantive chapter on digital services; and Incorporation of requirement to enable digital data exchange (AICM/AIXM) Digital NOTAM encoded in AIXM 5.1 is 20 times larger than equivalent Text NOTAM Exchange of some static messaging requirement like AIRAC cycle amendments may be challenging Project title (Insert, Header & Footer) 14
DIRECTORY SERVICE Reference ATNICG WG/8 WP/6 & WP/10 28/09/2010 In support of ATN Directory Service a) can be used to distribute, update and synchronize address translation data between ATN & AMHS b) allows lookup and browsing of ATC object entries by operational and administrative staff c) can support Public Key Infrastructure (PKI) for digital signatures for AMHS and other applications d) will provide more efficient & timely management of the data required to operate the AMHS & AFTN gateways Reasons for not using Directory Service a) only a few ANSPs are using AMHS b) those that are using want to gain more experience before committing to deploy the Directory Service recognizing the associated difficulties Project title (Insert, Header & Footer) 15
DIRECTORY SERVICE X.500 based Directory Service specified in Doc 9880 Part IV Technical Specifications Distributed Global System Commercial Off the Shelf (COTS) product Main Directory Service Requirements Resolve names between ATN & AMHS Manage distribution list Publish user attributes capabilities Support AMHS security Project title (Insert, Header & Footer) 16
VOICE OVER INTERNET PROTOCOL VoIP to transmit audio data (especially voice) via IP packets. EUROCAE/67 created to examine use of VoIP in Air Traffic Management environment. Benefits for ground-ground communication Technical benefits: single network Cost reduction: single network for voice & data Flexibility: IP solution Main issues to be addressed Safety of operations Continuity Release of documents in Feb 2009 Transition issues AMHS/SWIM SEMINAR 17
VOICE OVER INTERNET PROTOCOL Voice networks normally are Connection Oriented, whereas data networks are mainly Connection-less. Benefits Network availability Continuity/contingency Issues with IP Data corruption Sequence of receipt of datagrams Loss or destruction of datagrams Safety critical & administrative communication AMHS/SWIM SEMINAR 18
CONCLUSION Dual Stack BBIS in place to meet APANPIRG Conclusion 19/20 timeline AFTN and AMHS to coexist for considerable period of time Many options coexisting For AMHS to be really acceptable, applications need to developed Transition to SWIM AMHS/SWIM SEMINAR 19
