1. Inmarsat Aeronautical System Status
Damian Harrington
Aeronautical Systems Engineer
30 October 2003

2. Inmarsat Aeronautical
Classic Services Overview
Aero-H 
Aero-H+/I  (SARPs Compliant)
Aero L 
Swift64
Aeronautical BGAN

3. Classic Services Overview
ACARS
(DATA-2)
AES
X.25
(DATA-3)
Cabin and Cockpit voice and data services with full P3 capability
PSTN
GES

4. Inmarsat Aero-H Global Beam Only 21K Voice PC-data and Fax Packet Data
600 – bps channel rates
Shared channels

5. Inmarsat Aero-I/H+ Aero-I (Intermediate Gain Antenna)
Spot Beam Operation
8.4K Voice
PC-data and Fax
Global Beam Operation
Packet Data at 600 – 4800 bps
Aero-H+ (High Gain Antenna)
Global & Spot Beam Operation
Packet Data at 600 to bps

6. Inmarsat-3 Spotbeam Coverage Area

7. Inmarsat Aero-L Global beam only Low Gain antenna – Omnidirectional
Data 600 and 1200 bps
Supported by all GESs

8. Inmarsat Swift64 Uses existing High Gain Antenna Has two services
Swift64 ISDN Service
Swift64 MPD Service
Uses existing Inmarsat ISDN and MPDS infrastructure on INM-3 spotbeams
Swift64 ISDN
Swift64 MPDS

9. Swift64 ISDN Service
AES
NCS
LES
ISDN

10. Swift64 ISDN Service Circuit mode service One ‘user’ per channel
Data throughput is 64 kbits/s
Charged per time unit

11. Swift64 MPD Service
User
AES
Internet
Internet
NCS
HLES
SBS

12. Swift64 MPD Service Packet mode service. Multiple ‘users’ per channel.
User has a portion of the 64 kbits/s channel at any one time.
Charged per kbit not connection time.

13. Aeronautical BGAN Swift64
Inmarsat-4 satellites will provide new service opportunities in all aeronautical market segments:
Increase data rates for existing satcoms installations.
New data services for medium/ short-haul aircraft and helicopters.

14. Space Segment – INM 4 User Link : L Band Feeder Link : C Band
Orbital Positions
F1: approx. 65 E
F2: approx. 54 W
F3: TBD (if 3 successful launches)
Prime Contractor : Astrium
10 year lifetime (minimum)
Launchers
Atlas 5, Ariane 5
Has a LxL capability

15. Satellite Launch Configuration
Spacecraft Power: 12 kW
Launch Mass : 6 Tons
Solar Array Span : m
Overall Dimensions:
6.9 m Z axis, 2.9 m X axis, 2.35 m Y axis
EUROSTAR E3000 Structure comprises:
Service Module (SM)
Communications Module (CM)

16. Satellite Overall Coverage Area

17. Spot Beam Coverage 54 West
Narrow Spot Beams Wide Spot Beams

18. Satellite Overall Coverage Area

19. Ground Segment BGAN SAS 1 BGAN SAS 2 BGAN DCN BGAN DCN I4 Satellite
L-Band
User
Links
I4 Satellite
I4 Satellite
I4 Satellite
I4 Satellite
L-Band
User
Links
(F2 ~ 54W)
(F2 ~ 54W)
(F1 ~ 65E)
(F1 ~ 65E)
RF/IF CN
RAN 1
RAN 2
RF/IF CN
RAN 1
RAN 2
BGAN SAS 1
BGAN SAS 2
BGAN DCN
BGAN DCN
Satellite Orbital
Data; TT&C
Resource &
Network
Management
Billing Data, Fault Management,
Customer care
Inmarsat
SCC
Inmarsat
BOC
Inmarsat
NOC
PoP
Other PLMNs
PDN
PSTN
ISDN

20. Aero BGAN Based upon a new Inmarsat Air Interface Specification.
Defines a range of data rates
QPSK and 16 QAM
Symbol rates of:
16.8, 33.6, 67.2 and ks/sec
Variable rate coding – set of predefined puncturing matrices
Coding indicated by U.W’s
Change rate per 1 dB in C/No
Operating point chosen for a PER of 1 x 10-3
User data rates up to 492 kbit/sec
Adapted for a range of Antenna types (High, Intermediate & Low Gain)

21. Antenna Types Aero low gain BGAN Aero L - global Aero I BGAN Aero I•
tbd kbit
/s rx /s tx
Aero L -
global
1.2
kbit
/s PMD
Safety services
Aero I BGAN
200 –
344
192
332
Aero I
regional
2.4
/s fax and data
4.8
/s X.25
Aero high gain BGAN
266
422
492
Swift 64
64kbit/s ISDN & MPDS
Aero H/H+
Voice, fax, PM data
BGAN Mode
Existing mode
kbit
kbit

22. BGAN Deployment Schedule
2005
2003
2004
Regional Launch
Global Launch
Development Phase
CN Integration & Test
RAN Integration & Test
Pre-I4 Testing
Testing over I4
Alpha Testing
I4 F1 Available
I4 F2 Available
Beta Testing
This slide shows BGAN schedule and NOT Aero BGAN. Aero due one year later due to equip. manufacturers.