IMPROVED MICRO MOBILITY MANAGEMENT

摘要

A MN, a method and a VMAP for increasing efficiency of handover of the MN from a ARl to a AR2. The VMAP is hierarchically below a MAP and above the ARl. The MN has a RCoA valid under the MAP and a LCoA valid under the ARl. The VMAP comprises an OMM Function capable of receiving a PathUM thereby informing the VMAP that the MN 412 is handing over to the AR2, computing a LCoA2 valid under the AR2 and forwarding traffic received on the LCoA to the LCoA2. A VMAP Binding Cache Entry for the MN comprises at least the MNs RCoA, the MN's LCoA and a unique value associated with the MN. The VMAP, therewith, computes the LCoA2 using a same function as in the MN. Prior to receiving the PathUM, the VMAP could receive an E-LBA issued from the MAP and addressed to the LCoA comprising the MN's RCoA and the unique value associated with the MN and thereafter, creating or updating the VBCE for the MN using information included therein.