Satellites

1
Satellites ground wireless broadband
infrastructure for public safetyWorkshop on
Broadband Wireless Ad-Hoc Networks and
Services12th - 13th September 2002 ETSI, Sophia
Antipolis, France

• Prepared by
• Alain Claverie (Alain.Claverie_at_astrium-space.com)
  
• Laurent Bouscary
• Dinh Phuoc Vo

2
Toward the broadband for public safety

• What is the role of telecommunications within all
  global crisis disaster relief activities ?
• What are the satellite contributions?
• Which consequences on the MESA project?

3
MESA within the global scope
Ensure end to end communications Everywhere
Anytime
Operations
On the field
Decision maker
4
Fast deployment of networks

• New wideband wireless network deployment will
  take years!
• Satellite allows immediate deployment on critical
  areas

PMR Cell
PMR/Satellite cells
Satellite cell deployed on risk area
5
No technological challenge!

• Example of GSM cells via satellite deployed in 3
  months in Mauritania

• Example of GSM cells deployed in Germany during
  the Elbe 2002 flooding with EveryCom

But an economical challenge!
6
Mesa / Satellite integration benefit
Use Existing satellite INTELSAT, EUTELSAT,
ARABSAT,...

• Satellite solution
• Support full duplex video, voice and data
• Fast deployment
• Single hop (voice)
• Backup of dedicated networks
• Reach any area

• PMR
• Global solution
• Support data, voice video
• Robustness
• Group calls
• Emergency calls

7
International missions

• Benefits of satellite coverage
• Turkey, Algeria, Greece
• Possibility of several cells
• Access to the world wide public network
• WHEN
• Relief / Humanitarian forces deployed need
  contacts with their headquarter

Example with Eutelsat W3
8
International Charter Space and Major Disasters

• What is the Charter?  
• An initiative meant to develop a coordinated
  global response of space resources in times of
  natural or technological disaster.
• Members
• European Space Agency
• Centre national d'études spatiales
  Canadian Space Agency National Oceanic and
  Atmospheric Administration Indian Space Research
  Organisation
• What space resources are currently available
  through the Charter?
• The remote sensing satellites RADARSAT-1, SPOT,
  ERS-2, IRS, POES and GOES.

• How to transmit on the field?

9
Broadcast of Meteo informations

• A key issue for crisis disaster relief

• 200 Meteo France
• gt 400 end users stations

10
Get relevant information on stressed conditions

• Have a GLOBAL view of the disaster
• Satellite, Aircraft imagery
• Information from the field (video, high
  resolution image)
• But it is not quite effective today
• Delay to get images (at least 24h)

11
Integration in the operations management
Complementarities of the satellite
High speed link

• Backup of existing networks
• Broadband communication (video)

HR image
VL OFF
Group 2
Group 1
12
Connection between terrestrial, radio and
satellite networks
Satellite
Main centre
Terrestrial
TETRAPOL networks
Radio
Mobile centre
Regional centre
13
Satellite technology on board switching (WeB)

• Two types of services on one platform
• Access to public and private networks (inc.
  Internet backbone)
• Mesh network

DVB-RCS
DVB-S
Mesh RCSTs
DVB-S
DVB-RCS
DVB-S
Mesh mission
DVB-RCS
Access mission
INTERNET
Gateways
Access RCSTs

• Improvement of existing services to end users
• Corporate communications services
• Lan interconnection, Multicast data
  services,Telephony / video conference services
  (VoIP), Internet / intranet services
• Communication services to SOHOs, SMEs,
  Teleworkers, Home Users
• New services to end users
• Meshed VPN communication services
• Extension of the existing broadcast services to
  interactive services
• Services for institutional users

14
Geo MobilePoint to point communication services
S-Band Mission

• Types of Services
• Remote connection to other terrestrial networks.
• Connection between two users within the satellite
  network

Mobile Terminals
Mobile Terminals
Nomadic Terminals
S-Band Link
Feeder Link
Service Gateway for S-Band mission

• Improvement of services (compared with systems
  already deployed (Inmarsat, Thuraya)
• Increased spectrum availability for MSS services
  through use of S-band spectrum
• Increased ability to serve traffic hot spots
• Higher data rates for similar size terminals or
  smaller size terminals (down to palmtop)
• New functionalities to satellite operators /
  service providers
• Secures S-band spectrum for MSS services

15
Optical link (Silex follow on)
GEO

• Types of services
• Vice-versa the provision of information from the
  ground to these aircrafts in real time
• The relay of data (typ. High data rate video)
  from an aircraft to the ground through a
  geostationary payload (Intersatellite link
  feeder link)

RF Link
Optical Link

• Operational introduction of new services
• Operational concept already validated in orbit a
  data link between Spot 4 and Artemis can be
  established using a laser beam as signal carrier
• Real time data collection and transfer
• Very high bit rate applications (several hundred
  of Mbit/s) at quasi-error free quality

16
Satellite roadmap
Status Status Expected in orbit date opportunities Expected in orbit date opportunities
WeB system 1999 01?02 beginning of the WeB-Artes 3 phase1 program, funding by ESA WeB phase 2 2006 first broadband regenerative payload for commercial operator
Geo Mobile 99?00 00?now 01?02 01 ? 04 S-UMTS study with ESA Participation to ASMS-TF with ESA and EC Advance mobile satellite system study with ESA Inmarsat programme (F1/F2/F3) 2007 commercial or ESA satellite
Silex follow on 2001 First optical links between Spot4 and Artemis 2003 2007 Artemis in GEO orbit ESA relay
17
Satellite benefits

• Fast deployment of networks
• When non existing or damaged terrestrial
  infrastructure
• Availability and reliability of the satellite
• Look at capacity to preempt satellite transponder
• A very broad coverage, with as low as 3
  satellites to cover all Earth
• Open system
• Support most of communication application
  (satellite delay)
• Broadband communication
• Video, images, voice, teleconference, data
• Secure communications
• Compatibility with encryption techniques

18
Way forward for integration of the space
component in MESA project

• Terrestrial and satellite networks development
  should be coherent
• Today, main topics are
• Allocated frequency band and associated
  coordination constraints
• Air interfaces, for compatibility with user
  terminals
• Connectivity requirements
• Resources management
• Network architecture, centralised or not
• Network protocols to be supported
• Applications requirements (real time)
• An integrated MESA standardisation process
  including the space segment will guarantee a
  full interoperability with other elements of the
  MESA infrastructure