Method and apparatus for maintaining communications when radio communication is unavailable
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United States of America Patent
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Oct 7, 2008
Grant Date -
Nov 10, 2005
app pub date -
May 4, 2004
filing date -
May 4, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A method and apparatus for maintaining communications between a mobile computer and a mobile subscriber unit is disclosed. The method and apparatus comprise determining whether a connection is available between the mobile subscriber unit and a radio communications system. If a connection is available, then the method and apparatus include retrieving a first IP address for the mobile computer from the radio communications system. Then, the method and apparatus comprise caching the first IP address in the mobile subscriber unit for use by the mobile computer. Finally, the method and apparatus include utilizing the first IP address even if the radio communications system is unavailable and updating the first IP address with a second IP address obtained from the radio communications system when the radio communications system is available.
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