Method and apparatus for updating a key in an active state
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United States of America Patent
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Sep 20, 2011
Grant Date -
Apr 7, 2011
app pub date -
Dec 23, 2010
filing date -
Sep 28, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A method for updating a key in an active state is disclosed according to the embodiments of the present invention. The method includes steps of: initiating a key update by a user equipment in the active state or a network side when a pre-defined condition is met; updating the key by the network side and the user equipment, and negotiating an activation time of the new keys. An apparatus for updating a key in an active state is also disclosed according to the present invention. With the present invention, the user equipment in an active state and the network side may actively initiate the key update procedure in different cases, thereby solving the problem concerning the key update for a session in an active state.
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