1 / 19

AT&T Wireless Services Aviation Communications Division Air to Ground Data Communications

AT&T Wireless Services Aviation Communications Division Air to Ground Data Communications e Plane Service WAEA Technical Committee February 16, 2000. Email Overview. Internet E-mail Transport - SMTP Access Proprietary POP3 IMAP4 E-mail In the Airborne Environment Transport and Access

conan
Download Presentation

AT&T Wireless Services Aviation Communications Division Air to Ground Data Communications

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. AT&T Wireless Services Aviation Communications Division Air to Ground Data Communications ePlane Service WAEA Technical Committee February 16, 2000

  2. Email Overview • Internet E-mail • Transport - SMTP • Access • Proprietary • POP3 • IMAP4 • E-mail In the Airborne Environment • Transport and Access • Limitations • Bandwidth • Security • Operational Realities • ePlane Service in North America - AT&T’s Approach

  3. E-mail Basics - The Big Picture

  4. Internet E-mail • Transport • SMTP - Simple Mail Transfer Protocol • The Internet standard that governs how e-mail messages are sent from site to site. • Requests For Comment (RFCs) cover: • Message Size Declarations • Delivery Status Notifications • Authentication and Error Codes • Other Rules & Conventions Governing SMTP

  5. E-mail BasicsAccess - Models

  6. Internet E-mail • Access • Proprietary access will include POP3 & IMAP4 protocols but may use other messaging technologies besides IP (Eudora, MS Outlook). • POP3 - Post Office Protocol, provides an off-line access model. • IMAP4 - Internet Message Access Protocol, provides online & disconnect access model

  7. PROs and CONs

  8. E-mail BasicsAccess - Protocols

  9. Email In the Airborne Environment • Transport • Always Will Involve an RF Off-Aircraft Link • Will Require Gateways to Airborne Servers via Satcom, Terrestrial and Gatelink Methodologies • Will Use Ground-Based IP Network • Access • Passengers May Use Airborne Telephony, IFE or Other Cabin Distribution Systems. • Access Likely to Support “Core” Standard Interfaces (Physical Layer & Logical Layer)

  10. Limitations of Email In the Airborne Environment • Bandwidth • Legacy IFE Architectures May Have Limited Throughput • Off-Aircraft Link May Limit Large Attachments (May Not Be a Strong Limitation with Future Satcom Technologies) • Security • Corporate “Firewall” Is A Policy Problem - Security Protocols (IPSEC & SSL) Not Universally Adopted • Operational Realities • The “Flight Level 100” Problem

  11. Potential Aircraft Email & Internet Applications • Customer Service / IFE • Transaction Processing • Sports Scores • Connecting Gates • Service Selections • RES Access • Reservations • On-Board Info Service • Real-Time Info Service • Messaging Service • Marketing Tracking • Surveys / Comments • Shopping • Games / Gaming • Advertising • www.com • Cabin Mgmt • Connecting Gates • Cabin Logbook • Frequent Flyer / Customer Profile • On-Board Inventory • Systems Info & Troubleshooting • Departure Reports • Briefings • Customer Service • FA Comm System • Financial Rpts • Cabin Discrepancy Log (CDL) • Catering Reports • Baggage/Asset Tracking Operations • Electronic Logbook • Weather • FOQA • Weight Data • Departure Reports • A/C Position • OOOI Reports • 615 Data Loader • FMS • ACMS • Fault Reports • Gate Assignment • Engine Data • Crew Scheduling

  12. AT&T’s Approach ePLANE Service in North America

  13. Airborne Data Server Architecture On-Board Distribution System Maintenance Terminal Pilot Station Cabin Mgt Station Ethernet IFE Ctrl/ Server A429 ACARS Ethernet/Token Ring/RS485 Aircraft Systems Ethernet Gatelink FMC ACMS DFDAU/QAR IRS/INS/GPS CMC BRI/CEPT A429 CTU/496 Airborne Data Server (ADS) CDS

  14. NATS Network Architecture ADS Gatelink Possibilities Wireless LAN Tether - Ethernet, FDDI CDPD Airborne Data Server (ADS)

  15. I n t e r n e t ACM X . 2 5 / F r a m e R e l a y Airline Data Center Concept Airborne Communications Manager (ACM) Legacy Systems Client Server Environment Remote Dial Up Access LAN POTS 802.11 Internal TCP/IP Gatelink ACM Functionality: Communications Security Data Routing Network Management AT&T Data Hub

  16. Communications Management Functions Airborne & Ground-Based Capabilities Stack layers provide the following functionality: • Router API - provides application access to communications channels. Includes: • service request validation • File System interface • call statistics collection • call detail records (CDR) • Data Router - provides data routing (application-to-application, both on-board aircraft and off-aircraft). Includes: • request queuing (by priority and arrival time) • link selection (terrestrial/satellite/on-board) • addressing

  17. Communications Management Functions Airborne & Ground-Based Capabilities • Convergence - provides protocol conversion, when required. Also provides: • data encryption/decryption • data compression (and decompression) • PAD - provides basic packet service for off-aircraft communications. Includes: • data fragmentation and re-assembly • TCP packet assembling and dissembling • X.25 packet assembling and disassembling • packet routing • call control

  18. Remember….. • Email Is A Complex & Widely Used Technology • “End-to-End” Solutions Are Preferred - Solutions Must Be Found For the Airborne and Ground Segments • Standards-Based Solutions Are Recommended • Useful For Airlines Operations As Well As A Passenger Amenity • Users Must Understand The Limitations • Technology Alone Will Not Provide The Complete Solution

More Related