Introduction to the RANET WorldSpace Module for BMG 5in1 BMG and RANET Training Course on Tsunami Di

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Introduction to the RANET WorldSpace Module for
BMG 5-in-1BMG and RANET Training Course on
Tsunami Dissemination SystemsThe BMG 5-in-1
Client and RANET WorldSpace ModuleJakarta,
IndonesiaMarch 20-22, 2007
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General Processes

• BMG 5-in-1 Dissemination Server receives warning
  message from BMG.
• The BMG 5-in-1 Dissemination Server send via FTP
  warning files to three RANET servers. The three
  servers provide redundancy in case of failure or
  other network problems.
• The RANET servers check every 15 seconds for new
  incoming warning messages. New information is
  prepared and formatted for broadcast.
• Before uploading the warning file, the RANET
  servers access the WorldSpace uplink facility in
  Singapore and delete all content queued for
  broadcast and deletes the next 15 minute
  schedule.
• The RANET servers then upload the warning files
  to the uplink facilities in Singapore.

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General Processes Continued

• The warning is then repeated five times. If the
  warning message contains and image, the text
  material and warning is broadcast first five
  times, and then the image is broadcast five
  times.
• Once the warning is broadcast, anyone with a
  WorldSpace receiver tuned to FVI DATA will
  receive the warning.
• All downloaded warnings are stored in the
  WorldSpace content directory under warning.
  The BMG 5-in-1 examines this folder, and if a new
  warning is available will sound an alarm.
• Depending upon the operating facility of the BMG
  5-in-1 Client, the warning may be forwarded via
  other communications, such as fax or mobile
  phone.

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Advantages

• Wide geographic coverage.
• Inexpensive station equipment (130) with no
  recurring service or direct operational costs.
• Able to disseminate a warning within 2-4
  minutes.
• It is a satellite based system not vulnerable to
  the same failures that might be faced by
  terrestrial systems.
• Because the WorldSpace system is intended for an
  individual consumer market, the equipment is
  designed to be user friendly and easy to
  install.
• The system and capacity can easily be utilized to
  send other warning information or even daily
  products.

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Limitations

• The RANET WorldSpace Module operates on a
  broadcast platform, therefore there is not a
  confirmation or other feedback loop. Without SMS
  or Internet connection, there is no way to know
  if a confirmation is received, if the station is
  operable, it is not possible to request
  information, etc.
• RANET capacity is through a best effort network
  and program, where there are no Service Level
  Agreements (SLAs) or other contracts with
  commercial carriers.
• RANET WorldSpace module is dependent upon a
  computer, and therefore not intended as a
  individual, household, or small community warning
  system