Patent ID: 8325680
Filing Date: 2012-12-04
Classification: H04W

Abstract:
1. A method for registration of a mobile node on a foreign network during a hand-off transition comprising: receiving a pre-handoff registration request message at a local mobility anchor after a mobile node has initiated a connection to said foreign network but prior to completion of a hand-off to the foreign network, said pre-handoff registration request message including a pre-handoff registration request indicator, a lifetime time period indicator, and a directionality indicator specifying the direction of traffic associated with the foreign network that will be processed during the lifetime time period, wherein the pre-hand off registration request specifies bidirectional traffic as its directionality, which means the local mobility anchor will process all communication packets being sent from or sent to the mobile node using the provisional care-of address; creating an appropriate entry on a cache entry table for a provisional care-of address for the mobile node associated with the foreign network; transmitting a registration response from the local mobility anchor confirming the pre-handoff registration for the transitional lifetime time period; and using the provisional care-of address at the local mobility anchor to process communication packets associated with the mobile node.