Dot 9705AN/956 MANUAL OF TECHNICAL PROVISIONS FOR THE AERONAUTICAL TELECOMMUNICATION NETWORK (ATN) SECOND EDITION - 1999 Approved by the Secretary General and published under his authority INTERNATIONAL CIVIL AVIATION ORGANIZATION FOREWORD The material contained in this document was originally developed as the detailed part of the first set of Standards and Recommended Practices (SARPs) for the aeronautical telecommunication network (ATN) which has commonly been referred to as the CNS/ATM-1 Package. It was intended to make the material an appendix to the new Chapter 3 of Annex 10, Volume III, Part I, containing broad, general, stable and mostly regulatory-type provisions (the core part of new ATN SARPs). In December 1997, the Air Navigation Commission (ANC), while conducting the final review of draft ATN SARPs, noted that actual implementation and operational experience was yet to be gained by the international civil aviation community. In this regard, the ANC agreed that the detailed part of ATN SARPs should be published as an ICAO manual (to be updated annually, if necessary), while retaining its SARPs-style language. The ANC will review the status of the document, in its entirety or in parts, after sufficient implementation and operational experience has been gained and the requirements for further standardization, in the interests of safety, regularity and efficiency of international civil aviation have been better ascertained. This document consists of five Sub-Volumes: Sub-Volume I — Introduction and System Level Requirements Sub-Volume II — Air-Ground Applications Sub-Volume III — Ground-Ground Applications Sub-Volume IV — Upper Layer Communications Service (ULCS) Sub-Volume V — Internet Communications Service (ICS) Provisions contained in Sub-Volumes II, III, IV and V have been developed in accordance with system requirements specified in Sub-Volume I. In line with the agreement by the ANC that the document should be updated on a yearly basis (if deemed necessary), the Second Edition has been published to incorporate changes necessitated by continuing validation and actual implementation activities. (iii) TABLE OF CONTENTS SUB-VOLUME I. INTRODUCTION AND SYSTEM LEVEL REQUIREMENTS 1.1 Definitions and References ..................................................... I-1 1.1.1 Definitions ........................................................... I-1 1.1.2 References .......................................................... I-22 1.2 General ................................................................... I-31 1.3 System Level Requirements ................................................... I-33 SUB-VOLUME II. AIR-GROUND APPLICATIONS 2.1 Context Management Application .............................................. II-1 2.1.1 Introduction ......................................................... II-1 2.1.2 General Requirements ................................................. II-4 2.1.3 The Abstract Service .................................................. II-5 2.1.4 Formal Definitions of Messages ........................................ II-17 2.1.5 Protocol Definition .................................................. II-21 2.1.6 Communication Requirements.......................................... II-64 2.1.7 CM User Requirements ............................................... II-65 2.1.8 Subsetting Rules .................................................... II-71 2.2 Automatic Dependent Surveillance Applications .................................. II-75 2.2.1 Automatic Dependent Surveillance Application ............................ II-75 2.2.2 Automatic Dependent Surveillance Report Forwarding Application ....................................................... II-211 2.3 Controller Pilot Data Link Communication Application ........................... II-241 2.3.1 Introduction ....................................................... II-241 2.3.2 General Requirements ............................................... II-244 2.3.3 The Abstract Service ................................................ II-245 2.3.4 Formal Definitions of Messages ....................................... II-257 2.3.5 Protocol Definition ................................................. II-307 2.3.6 Communication Requirements......................................... II-358 2.3.7 CPDLC User Requirements ........................................... II-359 2.3.8 Subsetting Rules ................................................... II-416 2.4 Flight Information Services Application ....................................... II-420 2.4.1 Introduction ....................................................... II-420 2.4.2 General Requirements ............................................... II-427 2.4.3 The Abstract Service ................................................ II-428 2.4.4 Formal Definitions of Messages ....................................... II-439 2.4.5 Protocol Definition ................................................. II-456 2.4.6 Communication Requirements......................................... II-508 (v) (vi) Manual of Technical Provisions for the Aeronautical Telecommunication Network (ATN) 2.4.7 FIS User Requirements .............................................. II-509 2.4.8 Subsetting Rules ................................................... II-516 SUB-VOLUME III. GROUND-GROUND APPLICATIONS 3.1 ATS Message Handling Services (ATSMHS) ..................................... III-1 3.1.1 Introduction ......................................................... III-1 3.1.2 ATS Message Service ................................................. III-7 3.1.3 ATN Pass-through Service ........................................... III-111 3.2 ATS Interfacility Data Communications ....................................... III-123 3.2.1 Introduction ....................................................... III-123 3.2.2 General Requirements ............................................... III-127 3.2.3 The AIDC-AE Abstract Service ....................................... III-128 3.2.4 The AIDC-ASE Abstract Service ...................................... III-144 3.2.5 The AIDC Control Function .......................................... III-155 3.2.6 The AIDC-ASE Protocol Definition .................................... III-188 3.2.7 AIDC Formal Definitions ............................................ III-229 3.2.8 Communication Requirements......................................... III-251 3.2.9 AIDC-user Requirements ............................................. III-252 3.2.10 Sequence Diagrams ................................................. III-255 SUB-VOLUME IV. UPPER LAYER COMMUNICATIONS SERVICE 4.1 Introduction ................................................................ IV-1 4.1.1 Scope and Objectives .................................................. IV-1 4.1.2 Background ......................................................... IV-2 4.1.3 Structure of UL Communications Service Specification....................... IV-3 4.1.4 Upper Layer Functionality .............................................. IV-4 4.2 Dialogue Service Description .................................................. IV-6 4.2.1 Scope of Dialogue Service .............................................. IV-6 4.2.2 Service Primitives .................................................... IV-7 4.2.3 Service Definition .................................................... IV-8 4.3 Application Entity (AE) Description ........................................... IV-17 4.3.1 Introduction ........................................................ IV-17 4.3.2 Application Level Naming and Context Definition.......................... IV-19 4.3.3 Control Function Specification ......................................... IV-27 4.4 Session Layer Requirements .................................................. IV-58 4.4.1 Protocol Versions Implemented......................................... IV-58 4.4.2 Session Functional Units .............................................. IV-59 4.4.3 Protocol Mechanisms ................................................. IV-60 4.4.4 Supported Roles ..................................................... IV-62 4.4.5 Supported SPDUs ................................................... IV-64 4.4.6 Use of Null-encoding and Short-connect Protocol Options ................... IV-67 Table of Contents (vii) 4.4.7 Mapping to the ATN Internet Transport Service ............................ IV-68 4.5 Presentation Layer Requirements .............................................. IV-70 4.5.1 Protocol Mechanisms ................................................. IV-70 4.5.2 Use of Null-encoding and Short-connect Protocol Options ................... IV-71 4.5.3 Mapping of Presentation Primitives to the Null Encoding Option .............. IV-72 4.5.4 Functional Units..................................................... IV-73 4.5.5 Elements of Procedure ................................................ IV-75 4.5.6 Supported Presentation Protocol Data Units (PPDUs) ....................... IV-77 4.6 ACSE Specification ........................................................ IV-79 4.6.1 Protocol Details ..................................................... IV-79 4.6.2 Protocol Versions.................................................... IV-80 4.6.3 Supported Roles ..................................................... IV-81 4.6.4 Protocol Mechanisms ................................................. IV-83 4.6.5 ACSE Functional Units ............................................... IV-84 4.6.6 Supported APDUs ................................................... IV-85 4.6.7 Mapping to the Presentation Service ..................................... IV-91 SUB-VOLUME V. INTERNET COMMUNICATIONS SERVICE 5.1 Introduction ................................................................ V-1 5.2 Definitions and Concepts ..................................................... V-2 5.2.1 Objectives and Goals .................................................. V-2 5.2.2 Definitions .......................................................... V-3 5.2.3 ATN End Systems .................................................... V-8 5.2.4 ATN Routers ........................................................ V-9 5.2.5 ATN Subnetworks ................................................... V-12 5.2.6 Quality of Service Concept ............................................ V-14 5.2.7 ATN Security Concept................................................ V-15 5.2.8 ATN Use of Priority ................................................. V-19 5.3 ATN Routing ............................................................. V-23 5.3.1 Introduction ........................................................ V-23 5.3.2 Service Provided by an ATN Router ..................................... V-24 5.3.3 The Deployment of ATN Components ................................... V-31 5.3.4 Ground/Ground Interconnection ........................................ V-33 5.3.5 Air/Ground Interconnection ............................................ V-35 5.3.6 Handling Routing Information .......................................... V-55 5.3.7 Policy Based Selection of Routes for Advertisement to Adjacent RDs .......... V-56 5.4 Network and Transport Addressing Specification ................................. V-64 5.4.1 Introduction ........................................................ V-64 5.4.2 Transport Layer Addressing ........................................... V-65 5.4.3 Network Layer Addressing ............................................ V-67 (viii) Manual of Technical Provisions for the Aeronautical Telecommunication Network (ATN) 5.5 Transport Service and Protocol Specification .................................... V-79 5.5.1 General ............................................................ V-79 5.5.2 Connection Mode Transport Layer Operation .............................. V-81 5.5.3 Connectionless Mode Transport Protocol Operation ....................... V-103 5.6 Internetwork Service and Protocol Specification ................................. V-107 5.6.1 Introduction ....................................................... V-107 5.6.2 ATN Specific Features .............................................. V-108 5.6.3 ATN Specific Requirements for ISO/IEC 8473 ........................... V-115 5.6.4 APRLs ........................................................... V-117 5.7 Specification of Subnetwork Dependent Convergence Functions .................... V-138 5.7.1 Introduction ....................................................... V-138 5.7.2 Service Provided by the SNDCF ....................................... V-139 5.7.3 SNDCF for ISO/IEC 8802-2 Broadcast Subnetworks ....................... V-141 5.7.4 SNDCF for the Common ICAO Data Interchange Network (CIDIN) ........... V-142 5.7.5 SNDCF for ISO/IEC 8208 General Topology Subnetworks .................. V-143 5.7.6 SNDCF for ISO/IEC 8208 Mobile Subnetworks ........................... V-144 5.7.7 ATN SNDCF Protocol Requirements List ............................... V-206 5.8 Routing Information Exchange Specification .................................... V-219 5.8.1 Introduction ....................................................... V-219 5.8.2 End System to Intermediate System Routing Information Exchange Protocol (ES-IS) over Mobile Subnetworks .............................. V-220 5.8.3 Intermediate System to Intermediate System Inter-Domain Routing Information Exchange Protocol ........................................ V-225 5.9 Systems Management Provisions ............................................. V-252 5.9.1 Introduction ....................................................... V-252 Sub-Volume I Introduction and System Level Requirements NOTE ON THE SECOND EDITION The list below shows the parts of this sub-volume that are different from similar parts of the first edition. Reference Nature of change 1.1.1 (definition of ATIS) Modification 1.1.2 (additional notes and ISO/IEC 8802-2 and 3 Addition references) I-(i) 1.1 DEFINITIONS AND REFERENCES 1.1.1 DEFINITIONS Note 1.— The aeronautical telecommunication network (ATN) comprises application entities and communication services which allow ground, air-to-ground and avionics data subnetworks to interoperate by adopting common interface services and protocols based on the International Organization for Standardization (ISO) open systems interconnection (OSI) reference model. Note 2.— This document addresses the following ATN technical requirements: a) General and system level requirements; b) ATN application entity requirements; 1) System application entity requirements; i) Context management (CM) application; 2) Air-ground application entity requirements; i) Controller pilot data link communication (CPDLC) application; ii) Automatic dependent surveillance (ADS) application; iii) Flight information service (FIS) applications; 3) Ground-ground application entity requirements; i) Air traffic services (ATS) inter-centre communication (ICC) applications; ii) ATS message handling service (ATSMHS) application; c) ATN communication service requirements; 1) Upper layer communications service; 2) Internet communications service. Note 3.— An overview of this document is depicted in Figure 1-1. I-1 I-2 Manual of Technical Provisions for the Aeronautical Telecommunication Network (ATN) Figure 1.1. Overview of document When the following terms are used in this document, they have the following meanings: Abstract service interface. The abstract interface between the application entity (AE) and the application user. Abstract syntax notation One (ASN.1). Abstract syntax notation One is defined in ISO/IEC 8824-1. The purpose of this notation is to enable data types to be defined, and values of those types specified, without determining their actual representation (encoding) for transfer by protocols. Addressing plan. A plan that provides common address syntax and management of global addresses for the unambiguous identification of all end and intermediate systems in accordance with the rules prescribed in ISO/IEC 7498-3 and ISO/IEC TR 10730. Administrative domain. A collection of end systems, intermediate systems and subnetworks operated by a single organization or administrative authority. An administrative domain may be internally divided into one or more routing domains.. ADS. The symbol used to designate automatic dependent surveillance. ADS application. An ATN application that provides ADS data from the aircraft to the ATS unit(s) for surveillance purposes. ADS Contract. An agreement between the ADS ground-user and the ADS air-user that the latter will provide reports to the former under the conditions specified in the contract. Aeronautical administrative communication (AAC). Communication used by aeronautical operating agencies related to the business aspects of operating their flights and transport services. This