1. ACARS & VDL Mode 2/AOA @ AVICOM Japan
Initial Operating Conditions 　 　　　＆　Experience　　　　　　　　
@ AVICOM Japan
S. Matsuzaki
Director Engineering

2. AVICOM Japan ACARS Service deployed APR. 1990
AOC Interoperability was established 　　between SITA (1990) and ARINC (1991)
Connected to KDD Yamaguchi GES for SATCOM Data service (1990)
Head Office. Minato-ku, Tokyo
Capital. 1,310 Million Yen
Stockholders
JAL, ANA, JAS, NTT, KDDI, NTT data etc

3. ACARS Current Status as of Oct. 2003
49 ACARS RGS in operation now.
Base Frequency = MHz
2nd Frequency = MHz 　　　　　　　　　　　　　　　at 7 Major airport
Approx. 2.2 Million Blocks / month
Up link success rate : Approx. 92 %

4. ACARS Traffic trend
Blocks

5. Success rate history
Uplink success

6. Driving factor toward VDL AOA
Steady growth of data link traffic
Need faster & reliable means to avoid capacity constraint.
VDL AOA (ACARS Over AVLC)
1st step for AOC delivery improvement
ATN (VDL M2) as 2nd step for ATS

7. VDL/AOA implementation
Contract with Mar. 2002
IOC : September 　　　　　　at Narita & Kansai A/P.
10 airports were selected as VDL/AOA site at initial phase.

8. ACARS and VDL/AOA Architecture at AVICOM Japan
RGS
ACARS
ARINC SITA
Airline
AVICOM Center
Existing ACARS System
JDLC
VGS
NMS
Gate
Way
AGRM
VDL Mode-2/AOA System

9. VDL System components
NMS
Gateway
AGRM

10. RGS
VGS
ACARS Remote Ground Station
VDL Ground Station

11. Performance - VDL Initial two weeks experience after IOC.
Two aircraft, B ER have logged on to VGS.
The airplane has flown
Kansai – China (Beijing, Shanghai)
Kansai – Haneda
Up link success = 98 %
@ Gateway per message block

12. Difficulties - VDL VDL range seems slightly smaller than that of ACARS
VDL cloud seems not continuous between Narita and Kansai.
Need more VGSs to cover whole airspace over Japan.
Blind area at Kansai airport
Installation of one more VGS at the other side of the terminal

13. Planned VGS deployment 2nd phase 1st phase CTS KUH KIJ IZO SDJ FUK NRT
HND
KOJ
NGO
KIX
KCZ
OKA

14. Emerging ATN
VDL/AOA Sys can be upgraded to an ATN compliant system by adding;
Software to handle ATN message
Routers for distribution of ATN message
And some others. (Hard & Soft)
Time for the upgrade depend on the progress of ATN implementation in Japan and World wide.

15. GEO
Thank you !
AOA　N/W
ACARS　N/W
TOKYO ACC
ARINC SITA
AIRLINES HOST