Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-04-12
2010-12-07
Appiah, Charles N (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C370S331000
Reexamination Certificate
active
07848753
ABSTRACT:
A broad aspect of the invention provides a method of providing mobility support for a mobile node's traffic. The method involves maintaining context information for the mobile node on each of a first plurality of network nodes carrying the traffic; and proactively transferring and maintaining at least a portion of the context information in a plurality of network nodes which are not carrying the traffic, but which are candidates for carrying the traffic due to mobility of the mobile node. The method typically further involves defining and maintaining a definition of the second plurality of network nodes. In one embodiment of the invention, this involves adding a particular network node to the second plurality when the particular network node becomes a candidate for carrying the traffic, removing a particular network node from the second plurality when the particular network node is no longer a candidate for carrying the traffic. Furthermore, for each node in the second plurality of network nodes, a definition is made of a node in the first plurality of network nodes from which to obtain the context information.
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Kenward Gary W.
Syed Hamid Mahmood
Appiah Charles N
Doan Kiet
Nortel Networks Limited
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