Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2008-04-29
2008-04-29
Kizou, Hassan (Department: 2619)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C709S224000, C709S225000, C726S016000
Reexamination Certificate
active
10918262
ABSTRACT:
The present invention relates to communications systems and, more particularly, to methods and apparatus for efficient address delegation and/or assignment and/or signaling in a virtual communications network, e.g., a network supporting virtual private networks (VPNs) and one or more addressing domains. The methods are well suited for systems such as mobile communications systems, where the number of mobile nodes in each of a plurality of visited domains can change on a relatively rapid time scale, so rendering static address delegation from the home to each visited domain highly inefficient. Address delegation may be undertaken in advance of address assignment requests from a visiting mobile node, or address delegation may be triggered by the address assignment request. Information update messages keep the home domain aware of the assignment status of its delegated addresses and can specifically trigger further delegations so that a number of unassigned delegated addresses is maintained.
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Kizou Hassan
Moutaouakil Mounir
QUALCOMM Incorporated
Straub Michael P.
Straub Ronald P.
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