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Agenda
• What is Gatelink?• Gatelink Technical Requirements• The Advent of Gatelink• Wi-Fi and Wi-Max• What is GateFusion?• Gatelink issues resolved by GateFusion• GateFusion system components• Making GateFusion a Reality
What is Gatelink?• Terrestrial data communications providing wireless access to the
aircraft– Began as a tethered solution, moved to infra-red, now Wi-Fi (802.11x)
• Gatelink includes a set of industry standards focused on data communications between an aircraft and a gate
– Capable of larger uploads/downloads than traditional wireless communications
– WiFi commonplace at airports
• Supports aircraft operational requirements– More aircraft centric data makes ‘Sneaker-net’ less viable
• New aircraft models incorporate Terminal Wireless LAN Units (TWLU)
– Boeing B777/B787, Airbus A380, Several retrofit progams
Gatelink Technical Issues• Getting TO the Network
– Version of Wi-Fi (802.11a/b/g)– Proximity to Access Point– SSID/Encryption Method
• Getting THROUGH the Network– Authentication– Delivery of large files at required airports with varying connectivity
• Getting the Data on/off the aircraft– Bandwidth utilization– WAN performance
• Handling Interruptions– Partial loading
Traditional Avionics ArchitectureCurrent Data Streams
MCDU
Flight Operations Quality AssuranceEngine/Data Downloads
(Sneaker-net)
ACARSCMU
FlightManagement
Computer
ACMS/Maintenance
Computer
VHF DigitalRadio
HF DataRadio
Inmarsat/IridiumSDU
ACARSMessaging
QAR/DataInterface
Engine/ExceedenceSnapshot Reports
Gatelink Data:• Flight Operations Quality Assurance (FOQA)• Electronic Flight Bag (EFB) Content• Cabin System Updates
TWLU
ACARSCMU
FlightManagement
Computer
ACMS/Maintenance
Computer
VHF DigitalRadio
HF DataRadio
Inmarsat/IridiumSDU
QAR/DataInterface
IFE Server
EFBMCDU
AeroSync
• In Flight Entertainment (IFE) Content• Flight Release Paperwork• Nav Database Updates
GateFusion Resolves Gatelink Complexities
• ARINC brings years of experience with Airport Wi-Fi, ground networks, and common use services to solve the following Gatelink challenges:
• Global Technical Solution– Consistent technical interface from airport-to-airport
• Eliminates Bandwidth Limitations– Data Delivery Service eliminates bandwidth variables between
aircraft and airline’s application host
• Global Reach– Single point of contact for fully-managed service worldwide
Wi-Fi and Wi-Max for Aviation• ARINC has been involved with Wi-Fi standardization for
aviation for nearly 10 years– Latest AEEC specification (822) fully addresses security,
authentication, and interoperability
• Wi-Max is a promising technology, and ARINC is supporting efforts to address compatibility/security issues for aviation– Latest standard ratified by IEEE less than one year ago – Communication products/standards require time to mature– Advantages and disadvantages of either technology
• Bandwidth sharing• Distance from transmitter
Wi-Fi and Wi-Max for Aviation
Wi-Fi Standardization for Aviation
1997
2007Full avionics compatibility
Standards for security/authenticationAEEC ratifies 822
IEEE ratifies 802.11g
IEEE ratifiesinitial 802.11
AEEC ratifies 763-3
1999
2003
2005
AEEC ratifies 763-1 Incompatible avionicsNo security/authentication
Limited avionics compatibilityBasic security introduced
Gatelink Issue #1 – inconsistent global
technical solution
Airport A Airport B Airport C
Airport interfaces are all different!SSID: Provided by AirlineSecurity: NoneAuthentication: Provided by Airport A
SSID: Provided by Airport BSecurity: WEPAuthentication: Provided by Airport B
SSID: Provided by IP Service ProviderSecurity: WPA-2Authentication: Provided by Airline
GateFusion Solution – Global Interface Transparency
Airport A
Airport B
Airport C
SSID: SAME Security: SAMEAuthentication: SAME Airline Application Server
ARINCGlobal
Network
Airport interfaces look the same!
SSID: SAME Security: SAMEAuthentication: SAME
SSID: SAME Security: SAMEAuthentication: SAME
Airport A
Gatelink Issue #2 – Bandwidth limitations
Airport A
Airline Network
Airline Application Server
Gatelink Bandwidth on airport premise is Mbps
Mbps
kbpsData throughput is limited to lowest circuit speed in the data path
Mbps
Bandwidth between airport and airline network can be minimal
Bandwidth from airline network to app host is Mbps
Aircraft to app throughput in thiscase is effectively in kbps
Airport A
Central AuthenticationServerARINC
GlobalNetwork
Airline Application Server
Local Delivery ServerCentral Delivery Server
GateFusion Solution #2 – Data Delivery Service Resolves Bandwidth limitations
Airport B
Airport C
Airport D
Tail AssignmentLocation
Destination
GateFusion’s Global Reach
• ARINC has negotiated access with multiple airport authorities– Americas, Europe, Asia– Technical terms are met and satisfied– Initial commercial terms are established– Negotiating T&Cs with Authorities
• Coverage negotiated per individual airline requirements
• Preliminary agreements reached with 65 airports• Expect several hundred airports by end of 2007
IFE Content Delivery Scenario
Airport A
Airport B
Airport C
IFE Server
ARINCGlobal
Network
Airport A
• Authentication and Wireless Security
• Data Delivery Service to Stage Data at Airports Prior to Aircraft Arrival
• Industry rethink on media delivery?
Summary: GateFusion for IFE Wireless Delivery
• Common Use for Cost Savings
• Seamless Connectivity at all Airports
ARINC Infrastructure
at Airport
Airport
ARINCOperations Center
AirportInfrastructure
AAA Server
CDS
Airline Headquarters
AirlineApplication
Server
LDS &
DNS Server
Network Access ServerDHCP ServerLAN Switch
AAA RADIUS Proxy
AviNet
Router
Router
RouterAirport Switch
AccessPoint
AccessPoint
AccessPoint
ARINCGlobal
Network
