Patent ID: 7508793

Claim:
A Virtual Mobile Anchor Point (VMAP) in a Mobile Internet Protocol version 6 (MIPv6) network for increasing efficiency of handover of a Mobile Node (MN) from a first Access Router (AR 1 ) to a second Access Router (AR 2 ), wherein the VMAP is hierarchically below a Mobile Anchor Point (MAP) and above the AR 1 and wherein the MN has a Regional Care-of Address (RCoA) valid under the MAP and a first Local Care-of Address (LCoA) valid under the AR 1 , the VMAP comprising: an imprOved Micro Mobility Management (OMM) Function capable of: receiving a Path Update Message (PathUM) thereby informing the VMAP that the MN 412 is handing over to the AR 2 ; computing a second Local Care-of Address (LCoA 2 ) valid under the AR 2 ; and forwarding traffic received on the LCoA to the LCoA 2 ; a VMAP Binding Cache Entry (VBCE) for the MN comprising at least: the MN's RCoA; the MN's LCoA; and a unique value associated with the MN; and wherein computing the LCoA 2 is performed by using the following function: LCoA 2 equals the first 64 bits corresponding to the AR 2 's subnet prefix concatenated with 64 bits obtained by hashing together the MN's RCoA, the MN's LCoA and the unique value associated with the MN.