| US 7,532,597 B2 | ||
| Method and apparatus to facilitate handover | ||
| Narayanan Venkitaraman, Schaumburg, Ill. (US) | ||
| Assigned to Motorola, Inc., Schaumburg, Ill. (US) | ||
| Filed on Mar. 13, 2006, as Appl. No. 11/275,998. | ||
| Claims priority of provisional application 60/690728, filed on Jun. 15, 2005. | ||
| Prior Publication US 2006/0285520 A1, Dec. 21, 2006 | ||
| Int. Cl. H04Q 7/00 (2006.01) | ||
| U.S. Cl. 370—331 [370/329; 455/456; 455/436; 455/428; 455/433] | 6 Claims |
| 1. A method for facilitating handover from a source access point to a target access point, the method comprising the steps
of:
an access point receiving at least one handover message destined for an anchor node and containing a care of address corresponding
to a mobile node, the handover message created by a second node in the network, wherein the second node is different from
the mobile node and the at least one handover message includes an authentication code generated with a shared secret key corresponding
to the mobile node at the anchor node; and
determining that the mobile node is handing over from the source access point to the target access point;
determining that the mobile node's care of address would change at the target access point;
transmitting a handover message taken from the list of received handover messages, the transmitted handover message indicating
a new point of presence to the mobile node's anchor node.
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