ATN Presentation. December 2001

Transcription

1 ATN Presentation December 2001

2 The ATN Overview

3 ATN (Aeronautical Telecommunication Network) ATN is a global aviation standard telecommunications network, and is intended to provide seamless ground-toground and air-to-ground communication services ATN is a dynamic telecommunications network designed to support projected traffic increase due to Air/Ground Service

4 ATN Router Packages Airborne System Airborne End System Airborne Router (Boundary Intermediate System) Ground Systems Ground End System Ground Router (Boundary Intermediate System) End System Intermediate System

5 Conceptual Model of The ATN End System () Application Process ATN End-to to-end End System () Application Process Application Entity ATN Communication Services End-to to-end Application Entity Upper Communications Service ATN Internet Communication Services End-to to-end Upper Communications Service Internet Communications Service Intermediate System (IS) Intermediate System (IS) Internet Communications Service Subnetwork Subnetwork Subnetwork

6 ATN Router Classes Airborne End System Upper Transport Network Airborne Boundary Intermediate System SARPs Class-6 Router Network Data Link Physical Mobile Network Data Link Physical End System Ground/Ground Boundary Intermediate System Air/Ground Boundary Intermediate System End System Upper Transport Network Data Link Physical SARPs Class-4 Router Network Data Link Physical SARPs Class-5 Router Network Data Link Physical Upper Transport Network Data Link Physical Ground Network

7 ATN Service Accommodate different grades of service ATN consist of: ATN internet ATN subnetworks ATN applications, such as AMHS, AIDC, CPDLC

8 ATN Internet ATN Internet is made up of Intermediate Systems (IS or router), End Systems ( or computer), and communication links. They form an ATN global internet

9 ATN Building Components ATN Application ATN Application IS IS IS IS ATN Internet IS ATN Application IS ATN Application ATN Application

10 ATN Boundary Intermediate Systems (BIS Routers) BIS router ensure the routing of application to its destination For mobile systems, provides for dynamic routing ATN defines different types of routers static or dynamic intra-domain routers inter-domain routers (boundary intermediate systems -- BIS)

11 ATN Internet Backbone The interconnection of ATN BIS (Router) form an ATN backbone provide ATN internetworking service, such as current planned Asia/Pacific ATN regional BIS backbone network

12 ATN Internetworking RDN IS RD3 BIS BIS IS IS RD1 BIS BIS IS RD2 IS IS

13 Asia/Pacific ATN Regional Backbone CN JP EUR Region HK TH MID Region SG NAM Region IN AFI Region APAC Region AU Inter-Regional Trunk Connection New Inter-Regional Trunk Connection Intra-Regional Trunk Connection New Intra-Regional Trunk Connection US is North America Backbone This is an example, it is subject to be changed

14 Asia/Pacific ATN Routing CN JP KR KP MN MO HK NP MM VN TW US TH LA MY AS MH FM PW KH BT BD LK PH BN ID NR PG SB VU MV ATN Site IN SG AU ATN Backbone Site NZ FJ US is North America Backbone This is an example, it is subject to be changed NU PF CK KI NC WS TO TV WF

15 ATN Internet Protocols ATN Internet Protocols ISO/IEC 8473 Connectionless Network Protocol (CLNP), all ATN End Systems and Routers shall support the CLNP. ISO/IEC Inter-Domain Routing Protocol (IDRP) required by all inter-domain routers - air-ground data links - between domains ISO/IEC 9542 End system to Intermediate system routing exchange protocol (-IS) ISO/IEC Intra-Domain-Routing & IS-IS Protocol (IS-IS)

16 ATN Internet Protocols ATN Internet Protocols CLNP does not guarantee successful delivery of data; the end-to-end transport protocol is required to support reliable data streaming. * ISO/IEC 8073 Class 4 Transport Protocol (TP4 with mandatory checksum support) Connection mode protocol Provides end-to-end flow control Retransmit lost packet * or ISO/IEC 8602 Connectionless Transport Protocol (CLTP)

17 ATN Subnetworks A subnetwork is part of the communication network, but is not part of the ATN. It is defined as an independent communication network, which is used as the physical means of transferring information between ATN systems.

18 ATN Subnetworks Almost any data communications network can be an ATN Subnetwork: X.25 Frame Relay LAN Aeronautical Mobile Satellite VHF Digital Link Leased Lines, etc...

19 ATN Application ATN Ground-to-ground applications include: AMHS (ATS Message Handling System) AIDC (Air Traffic Inter-facility Data Communications)

20 ATN G/G Applications AMHS ATS Message Handling System (AMHS) is designed to process ATS messages (Flight Plan, NOTAM, etc AMHS will only process messages to it end user of its domain AMHS also perform as a gateway for AFTN/CIDIN as required

21 ATN G/G Applications AMHS ATS Message Handling System (AMHS) is the Message Handling System (MHS) for Air Traffic Control, which is: running X.400 protocol, ATS Message Server, ATS Message User Agent, and AFTN/AMHS Gateway or CIDIN/AMHS.

22 AMHS ATN End System AFTN AFTN/AMHS Gateway AFTN/AMHS Gateway AFTN Station ATN AMHS AFTN AFTN Station ATN End System ATSMHS Traffic Flow

23 ATN G/G Applications AIDC The AIDC application automatically exchanges ATC information between ATSU in support of the ATC functions relating to: NOTIFICATION of flights approaching an FIR boundary, CO-ORDINATION of boundary crossing conditions, and TRANSFER of control at the FIR boundary

24 AIDC Aircraft Flight ATN BIS AIDC Legend AIDC ATS Inter-facility Data Communication BIS Boundary Router End System FIR Flight Information Region BIS BIS AIDC AIDC Flight notification, coordination, and transfer between regions

25 ATN Air-to-ground application Air-to-ground applications include: CM (Context Management) FIS (Flight Information Services) ADS (Automatic Dependent Surveillance) CPDLC (Controller Pilot Data Link Communications)

26 CM Context Management (CM) application allows an aircraft and the ground systems to exchange and update data link application information. CM exchanges the address information of ADS, CPDLC, and FIS between air and ground. Prior to data link activities, air CM initiates log-on to ground CM which responds to the logon request with appropriate address information to ground counterparts ADS, CPDLC, and FIS to air CM. After receiving appropriate address information, aircraft begins communicating with the ground ADS, CPDLC, and FIS.

27 CM CM Application Information Exchange Air-ground CM Information Exchange Air-ground CM Information Exchange Ground-ground CM Information Exchange Ground System Ground System Ground System

28 FIS and D-FIS Flight Information Service (FIS) provides pilots (or avionics) with information that increases flight awareness and enhances flight safety. Data Link FIS (D-FIS) provides pilots (or avionics) with information from ground systems via Data Link.

29 ADS Automatic Dependent Surveillance (ADS) is designed to give automatic reports to a user, which provide positional, dimensional information, and aircraft identification to the Air Traffic Management function.

30 ADS ADS Contract ADS Contract ADS Contract ADS Ground System ADS Report Forwarding ADS Ground System ADS Ground System Topology of the ADS and ADS Report Forwarding Applications

31 CPDLC Controller Pilot Data Link (CPDLC) provides two ways communication between pilot and controller, but using data link rather than voice Exchange of Controller/Pilot messages. Transfer of authority between current and next data authorities. Downstream* clearance delivery with downstream authorities. *Downstream is ahead of the aircraft, toward the destination.

32 CPDLC Potential Integration CPDLC Architecture Aircraft Domain Display CMU/ATSU ATN compliant VDR Transceiver HID/NAS LAN (orecg Upgrade) NSM HID To CTAS LAN HNL Router NAS LAN A/G Service Provider(s) Domain ECG (PAMRI upgrade) HCS URET CCLD HGW DS GW CP DLAP CMA* Router EAI LAN EDI Support * Miami and Cleveland ARTCCs only Wide Area Network VDL-2 Ground Stations A/G ATN BIS Router LIU DS HAL SAR DS LCN G/G ATN Router G/G ATN BIS Router R D A M & C Controller Consoles

33 ATN Air/Ground Architecture Router Router ATN Internet Router Router CPDCL Server AOC Traffic AMHS Server Terminal

34 ATN Architecture Management Processor Data Entry Processor Data Entry Processor Management Processor Avionics Subnetwork ATN Router VHF Subnetwork Satellite Subnetwork Mode S Subnetwork HF Subnetwork ATN Router Service Provider Subnetwork ATN Router Airline Ground Subnetwork CAA Subnetwork Aeronautical Operations Data Base Aeronautical Operations Control Weather Data Base ATC FIS Data Base Weather Data Base