| US 7,508,793 B2 | ||
| Micro mobility management | ||
| Wassim Haddad, Montreal (Canada); and Suresh Krishnan, Montreal (Canada) | ||
| Assigned to Telefonaktiebolaget L M Ericsson (Publ), Stockholm (Sweden) | ||
| Filed on Sep. 20, 2005, as Appl. No. 11/229,680. | ||
| Claims priority of provisional application 60/658567, filed on Mar. 07, 2005. | ||
| Prior Publication US 2006/0198370 A1, Sep. 07, 2006 | ||
| Int. Cl. H04Q 7/00 (2006.01) | ||
| U.S. Cl. 370—331 [455/436] | 9 Claims |
| 1. 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 (AR1) to a second Access Router (AR2), wherein the VMAP is hierarchically below a Mobile Anchor Point (MAP) and above the AR1 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 AR1, 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 AR2;
computing a second Local Care-of Address (LCoA2) valid under the AR2; and
forwarding traffic received on the LCoA to the LCoA2;
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 LCoA2 is performed by using the following function:
LCoA2 equals the first 64 bits corresponding to the AR2'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.
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