Patent ID: 8385285

Claim:
A method for enabling a hybrid route optimization in a network between two mobile endpoints including a mobile node and a correspondent node, wherein the mobile node is associated with a home agent and the correspondent node is associated with a destination home agent, wherein the mobile node is able to move around and attach to anyone of a plurality of access routers, the method comprising the steps of: sending a first message from the mobile node to the home agent, wherein the first message includes an Internet Protocol address of the correspondent node, wherein the home agent uses the Internet Protocol address to identify the destination home agent; sending a second message from the home agent to at least one of the access routers, wherein the second message includes information about the mobile node, the correspondent node, and the destination home agent; sending a third message from the at least one of the access routers to the destination home agent, wherein the third message subscribes the at least one of the access routers at the destination home agent for a presence notification service in which the destination home agent is to update the at least one of the access routers about a care-of address of the correspondent node whenever the correspondent node sends the care-of address to the destination home agent; sending a fourth message from the destination home agent to the at least one of the access routers, wherein the fourth message identifies the care-of address of the correspondent node; and upon receiving the fourth message, one of the at least one of the access routers attached to the mobile node sends a fifth message to the mobile node, wherein the fifth message includes the care-of address of the correspondent node which enables a re-direction of data traffic between the mobile node and the correspondent node.