The Fully Networked Car,
Geneva, March 2009
Use of Satellite Communications in ITS
Project SISTER
Adam Brzozowski
Project Manager
Avanti Communications Plc.
Joe
38 years old
Goods transport business
Bad experience with land transport
X
X
…so Joe opted for land transport but he
found it slow and unreliable, however
cheap...
…or maybe?
Bad experience with satellites?
Expensive, unreliable, confusing…
or simply I don’t know why I would need one?
Satcoms specifics
Orbits
Frequency bands
Coverage (beams, line of sight)
Communications capabilities
(speed, latency, etc)
Cost (suitable for mass market?)
Hardware specifics
SISTER Overview
•
10.5M Integrated Project co-funded by DG Enterprise &
Industry (FP6)
•
3 years project, started in Nov. 2006
•
SISTER promotes the integration of satellite and
terrestrial communications with GALILEO to enable massmarket take-up by road transport applications.
Consortium
Applications
Safety
Advanced Driver
Assistance Systems
Emergency Calls
Traffic Management
and Control
Fleet Management
Mass Market
Applications
Digital Maps
Electronic Fee Collection
Personal Navigation
Floating Vehicle
Data
Non Safety
Professional
Market
Applications
Chosen applications
Satellite Data Broadcasting (SDB)
Satellite Narrowband
bidirectional data transmission (SND)
Vehicle Navigation Service
Safety & Security Services
 Digital Maps Update
 eCall
Traffic and weather information
Theft detection
POI information update
Remote Vehicle Diagnostic
RTK data
PAYD insurance
GPS signal authentication
Road User Charging
Commercial Vehicles Services
Fleet Management systems
Why Satellite ?
•
•
•
•
•
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Provides back-up communications capability, closing the coverage gaps
of terrestrial network
Very efficient broadcast mode
Coverage: Pan-European solution, rural areas
Initiating communication/ authentication/ OBU interogation
Cost effective for large number of customers
No roaming necessary
Enforcement
Minimal infrastructure
Distribution of traffic over various communication platforms
Premium services
Transceiver
S-band
S-band
 Proximity to UMTS (3G) gives opportunity to modify existing chipsets and integrate Sband with existing handhelds and other devices
 2 x 30MHz reserved for mobile satellite services to be awarded in Q2 2009
 Available in 27 EU member states: interoperable and scalable solution
 Better penetration in built-up areas
 No roaming
 1st S-band satellite available in early 2009
S-band architecture
Ku-band
S-band
Hub station
Network
operations centre
Complementary
Ground Component
Coverage map (courtesy of Solaris)
Options for S-band based services
Radio and TV
Map updates as you drive
Real Time Location based
services (traffic, weather, POI,
web services)
Bi-directional capabilities
Existing SISTER Demonstrations
• Road User Charging
• eCall
• Map Updates
• Dangerous and Valuable
Goods Management
Integrated Demonstration
Road User Charging
RUC - application...
Roaming – the vehicle switches to satcoms outside its home network
Satellite broadcast supporting traffic management.
OBU interrogation and polling.
Enforcement
Demonstrations - eCall
Communication media tests
 in different environments (cities, rural, hills, forests)
 in different weather conditions
 in areas favoured by specific communications media
Demonstrations – Map Updates
Concept feasibility test
Content delivery time
 Different environments

Driving behaviours

Files with regular priority and alerts
Integrated Demonstration
Real Time Kinematics
OBJECTIVE: demonstrate that satellite communications can
support real-time carrier phase positioning of an unlimited
number of users, at the level of a few centimetres.
Emphasis on high accuracy, low bandwidth, and unlimited
number of users at the same time.
Authentication and Reconfiguration
Authentication demonstration will involve the continuous satellite
broadcast of digital signatures to authenticate the veracity of GPS
navigation data. The demonstration will include the broadcast of
signatures and the associated information/algorithms defining their use.
Reconfiguration part will demonstrate the reconfiguration of a GNSS
receiver via satellite communications upgrading the functionality and
performance of the GNSS user terminal.
Thank you!
for more information visit:
www.sister-project.org
Spare slides
eCall sites
Thuraya
Static test. Messages UDP of 42Bytes
Retardo medio = 2.03s
Jitter medio = 139ms
Thuraya
Dynamic test (1h). UDP messages of 42Bytes
N
rural
NE
rural
variable
urban
Thuraya
Duration
test
Ratio
Reception
Latency
Urban
Rural
43min
45min
31%
62.1%
11.79s
5.7s
WorldSpace
128kbps
North – South
(urban)
East - West
(urban)
3min
WorldSpace
0.016
Urban & Rural PL probability
0.014
0.012
Frequency
0.01
0.008
Rural
11.3% tiempo
Urban
30.19% tiempo
0.006
0.004
0.002
0
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82
Lost Packages

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Added values of satellite-based RUC
(broadcast)
In Germany, 600.000 OBUs for toll collect are currently in use (trucks > 12 t)
Problems:
1. Tariff data updates in 2008 required till a fixed date (Legislature).
- Each OBU has to ask at the BOS (Back Office System) for new data
- Tariff data has to be downloaded minimum 600.000 times
- Congestion at the BOS server can be expected
- Time-critical solution via GPRS
2. During start phase, each OBU asks BOS for new data.
- Each Monday morning a lot of trucks start at nearly the same time. 
Congestion at the BOS server
- Solution in the current implementation (Toll Collect Germany):
random delay of data requests during start phase is used.
Satellite broadcast can avoid such problems