Satellite mobile telephone cell departure prediction
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United States of America Patent
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-
Jan 6, 2009
Grant Date -
Nov 10, 2005
app pub date -
Jul 14, 2005
filing date -
Jul 16, 1997
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A mobile station (4) in a satellite mobile telephone system predicts when it will move into another cell on the basis of one set of broadcast information thereby reducing the overall processing burden. The mobile station (4) can predict with a useful degree of certainty which broadcast control channel (BOCH) frequencies it should listen on when it wakes up on the basis of a stored map of the relative positions of cells. The broadcast information is valid for a predetermined time interval. Upon waking up, the mobile station (4) determines present time within the predetermined time interval and uses the broadcast information as well as the present time within the predetermined time interval to predict the time at which the mobile telephone will leave the cell.
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