Satellite-based messaging system
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United States of America Patent
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Aug 26, 2014
Grant Date -
Jan 24, 2013
app pub date -
Jun 28, 2012
filing date -
Jul 19, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
In a satellite-based messaging system messages are exchanged between a ground station and mobile terminals over a wide geographic area covered by multiple satellite beams. Each beam contains one or more carrier frequencies. A message processing center is configured to provision a frame comprising a plurality of subframes to carry data over a forward link to the mobile terminals; hop between beams in the forward link and assign each subframe within a frame to a specific satellite beam; provision a transport medium in the form of virtual carriers each defined by one or more carrier frequency/beam hop combinations, wherein each virtual carrier is assigned a unique virtual carrier identifier; and notify the mobile terminals of carrier frequency/hop combinations for assigned virtual carrier identifiers.
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