atn presentation · * iso/iec 8073 class 4 transport protocol (tp4 with mandatory checksum support)...
TRANSCRIPT
ATN PresentationATN Presentation
December 2001December 2001
The ATN Overview
ATN(Aeronautical Telecommunication Network)
• ATN is a global aviation standard telecommunications network, and is intended to provide seamless ground-to-ground and air-to-ground communication services
• ATN is a dynamic telecommunications network designed to support projected traffic increase due to Air/Ground Service
ATN Router PackagesATN Router Packages
AirborneEnd System
Airborne Router(Boundary Intermediate System)
GroundEnd System
Ground Router(Boundary Intermediate System)
End System Intermediate System
AirborneSystem
GroundSystems
Conceptual Model of The ATN
End System (ES) End System (ES)
Application ProcessApplication Process
ApplicationEntity
Upper LayerCommunications
Service
InternetCommunications
Service
Application ProcessApplication Process
ApplicationEntity
Upper LayerCommunications
Service
InternetCommunications
ServiceIntermediateSystem (IS)
IntermediateSystem (IS)
ATN EndATN End--toto--EndEnd
ATN Communication Services EndATN Communication Services End--toto--EndEnd
ATN Internet Communication Services EndATN Internet Communication Services End--toto--EndEnd
Subnetwork Subnetwork Subnetwork
AirborneEnd System
Mobile Network
Airborne BoundaryIntermediate System
UpperLayer
TransportLayer
NetworkLayer
Data LinkLayer
PhysicalLayer
EndSystem
UpperLayer
TransportLayer
NetworkLayer
Data LinkLayer
PhysicalLayer
EndSystem
UpperLayer
TransportLayer
NetworkLayer
Data LinkLayer
PhysicalLayer
Ground/GroundBoundary
Intermediate System
NetworkLayer
Data LinkLayer
PhysicalLayer
SARPs
Class-4
Router
Air/GroundBoundary
Intermediate System
NetworkLayer
Data LinkLayer
PhysicalLayer
SARPs
Class-5
Router
NetworkLayer
Data LinkLayer
PhysicalLayer
SARPs
Class-6
Router
Ground Network
ATN Router Classes
ATN Service
• Accommodate different grades of service • ATN consist of:
– ATN internet – ATN subnetworks– ATN applications, such as AMHS, AIDC, CPDLC …
ATN Internet
• ATN Internet is made up of Intermediate Systems (IS or router), End Systems (ES or computer), and communication links. They form an ATN global internet
ATN ApplicationATN Application
ATNATNInternetInternet
ESES ESES
ISIS
ISIS
ISIS
ISIS
ISIS
ESES ESES
ATN ApplicationATN Application ATN ApplicationATN Application
ISIS
ATN ApplicationATN Application
ATN ApplicationATN Application
ESES
ATN Building Components
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)
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
RDNRD3
RD2RD1
IS
ES IS
IS
BIS
BIS
BIS
IS
BIS
IS ES
ES
IS
ATN Internetworking
Inter-Regional Trunk ConnectionNew Inter-Regional Trunk ConnectionIntra-Regional Trunk ConnectionNew Intra-Regional Trunk Connection
NAM Region
EUR Region
MID Region
AFI Region
APAC Region
Asia/Pacific ATN Regional Backbone
AU
CN JP
IN
TH
SG
HK
• US is North America Backbone• This is an example, it is subject to be changed
Asia/Pacific ATN Routing
AU
CN JP
IN
TH
SG
TO TV WFPF
FJNZ
ID
KR
NR
CK KI NC WS
NP
MO
TW
VUPG SBBD
VN
BNPH
MM
MV
LKBT
KH
LA MY
KP MN
NU
US
MH FM PWAS
ATN Backbone Site
ATN Site
HK
• US is North America Backbone• This is an example, it is subject to be changed
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 10747 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 (ES-IS)
– ISO/IEC 10589 Intra-Domain-Routing & IS-IS Protocol (IS-IS)
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)
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.
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 ...
ATN Application
ATN Ground-to-ground applications include:• AMHS (ATS Message Handling System)• AIDC (Air Traffic Inter-facility Data
Communications)
• 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
ATN G/G ApplicationsAMHS
• 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.
ATN G/G ApplicationsAMHS
AMHS
ATN End System
AFTN/AMHS Gateway
AFTN Station AFTN StationAFTNATNAMHS
AFTN
ATSMHS Traffic FlowATN End System
AFTN/AMHS Gateway
ATN G/G ApplicationsAIDC
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
AIDCAIDC
BISAIDC
BISES ES
Aircraft Flight
AIDC Flight notification, coordination, and transfer between regions
LegendAIDC ATS Inter-facility Data CommunicationBIS Boundary RouterES End SystemFIR Flight Information Region
ATN
BIS AIDCES
ES
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)
CMCMContext 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.
CMCM
Ground-ground CMInformation Exchange
Ground SystemGround System Ground System
Air-ground CMInformation Exchange
Air-ground CMInformation Exchange
CM Application Information Exchange
FIS and D-FISFIS 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.
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.
ADSADS
ADS Ground System
ADS Ground System
ADS Ground System
ADS Report Forwarding
ADS
Cont
ract
ADS Con
tract
ADS Contract
Topology of the ADS and ADS Report Forwarding Applications
CPDLCCPDLC
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.
Display CMU/ATSUATN compliant
VDRTransceiver
A/G ServiceProvider(s)Domain
Aircraft Domain
G/G ATNBIS
Router
A/G ATNBIS
Router
VDL-2 GroundStations
ECG(PAMRIupgrade)
HCS
LIU
R
WideArea
Network
G/G ATNRouter
HID/NAS LAN (orECG Upgrade)
URET CCLD
NSM
NAS LANHID
Router
EAI LAN
CP
HGW
DS GW
Controller ConsolesD A M & C
DS
DS LCN
DLAP CMA*
EDISupport
HAL SAR
To CTAS LANHNL
Router
* Miami and Cleveland ARTCCs only
Potential Integration CPDLC Architecture
CPDLC
G/G ATNRouter
ATN Air/Ground Architecture
ATNInternet
Router
Router
Router
Router
TerminalCPDCLServer AOC Traffic
AMHSServer
Data EntryProcessor
Data EntryProcessor
ManagementProcessor
ManagementProcessor
Data EntryProcessor
ManagementProcessor
ES
AvionicsSubnetwork
Airline GroundSubnetwork
Service ProviderSubnetwork
CAASubnetwork
ATN Router
ATN Router ATN Router
AeronauticalOperationsData Base
ESES ES
FIS Data BaseATCWeatherData Base
AeronauticalOperationsControl
WeatherData Base
ES ES ES
VHFSubnetwork
SatelliteSubnetwork
Mode SSubnetwork
HFSubnetwork
ATN ArchitectureATN Architecture
ES ES ES