Method and system for securely transferring context updates towards a mobile node in a wireless network
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United States of America Patent
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Nov 23, 2004
Grant Date -
Jan 1, 2004
app pub date -
Jun 27, 2002
filing date -
Jun 27, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A method and system for transferring contexts from a previous access router (PR) to a new access router (NR) that is subsequently associated with a Mobile Node (MN). For example, transferred contexts may include, but are not limited to, Security, Quality of Service (QOS), Header Compression, and Buffers. A context is transferred from the PR to the NR. Any change in an element of the context is conveyed by the NR to the MN in a secure fashion, even though a Security Association does not yet exist between the NR and MN. The NR provides an authenticated security context update to the MN, e.g., advising when the type of encryption has changed from Triple Data Encryption Standard (DES) to DES. The NR utilizes the Security Association between the PR and the MN, to provide such an authenticated security context update to the MN over a RAN or a wireless LAN.
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